YAMAHA AX-2000 (1987) | Titanium Series

The Yamaha AX-2000 was Yamaha’s flagship integrated amplifier of 1987, bringing technology developed for the legendary 10000 Series into a single, exceptionally ambitious chassis. With its built-in 18-bit DAC, HCA Class A power amplifier, enormous power supply and sophisticated internal construction, the AX-2000 was far more than a conventional integrated amplifier.

Yamaha AX-2000 Main Specifications

Type: Natural Sound Stereo Integrated Amplifier

Year: 1987

Rated output: 130W + 130W into 8Ω (20-20.000Hz, THD 0,003%)

Dynamic power: 180W + 180W into 8Ω

Damping factor: 200 at 1kHz / 8Ω

Digital section: 8fs 18-bit digital filter and 18-bit twin DAC

Analog inputs: 8

Digital inputs: 4

Video inputs: 3

Analog outputs: 4

Digital outputs: 2

Video outputs: 3

Phono: Separate MM and MC circuits

Power transformer: 420VA shielded type

Filter capacitors: 2 × 27,000μF

Power supplies: 5 independent supply systems

Dimensions: 473 × 170 × 475mm

Weight: 28kg

Original sale price in Japan: ¥230,000

Original sale price in Germany: DM 4,000

10000 Series Technology Comes to an Integrated Amplifier

The AX-2000 was conceived as a direct descendant of Yamaha’s 10000 Series, rather than simply being another successor to the earlier A-2000/A-2000a generation. Its most important distinction was the incorporation of technologies developed for Yamaha's ultra-high-end CX-10000 and MX-10000 separate components. The titanium-coloured front panel gave the AX-2000 a distinctive appearance, but the real engineering story was underneath. Yamaha treated the amplifier as a complete system in which the analog, digital, power and control sections were carefully isolated from one another. HCA — Yamaha’s Hyperbolic Conversion Class A. The power amplifier used Yamaha’s HCA circuit, derived from the technology employed in the MX-10000. HCA stands for Hyperbolic Conversion Class A. Instead of relying on a conventional Class A output stage that eventually transitions into Class AB operation as current demand increases, Yamaha used the logarithmic characteristics of transistor Ic-VBE behaviour to maintain the combined characteristic across the entire output range. The claimed advantage was particularly interesting: Class A operation could be maintained at full load and full output without simply relying on an extremely high idle current. The output stage used a triple push-pull configuration with high-fT power transistors, helping the AX-2000 deliver an impressive 150W per channel into 6Ω and an extraordinary claimed 600W per channel into 1Ω. For a 1987 integrated amplifier, those figures tell you something about Yamaha's intentions. An Integrated DAC Before It Became Ordinary. The AX-2000 was Yamaha’s first integrated amplifier with a built-in D/A converter. Its digital section used an 8fs 18-bit digital filter together with an 18-bit twin DAC configuration. Compared with a conventional 16-bit DAC, Yamaha's high-bit approach was designed to produce a smoother signal immediately after conversion and reduce the need for aggressive analog filtering. The amplifier also incorporated Yamaha's Advanced Digital Direct system. When Digital Direct was selected, the signal path was simplified by bypassing the tone amplifier. The digital converter's output was increased from the conventional 2.0V RMS level to approximately 7.5V RMS, allowing the following amplifier stages to operate with considerably less gain. Yamaha claimed a signal-to-noise ratio of 128dB at a typical listening level around -22dB, while the simplified signal path was said to improve the S/N ratio by more than 20dB compared with conventional arrangements. Active Volume Control. The volume control was itself an active circuit, rather than a conventional passive potentiometer arrangement. Yamaha combined a variable resistor with a linear amplifier so that the noise level decreased as the volume was reduced. This was particularly relevant in real-world listening, where a conventional passive volume control can become increasingly unfavourable from a signal-to-noise perspective as attenuation increases. Yamaha claimed an improvement of more than 10dB over a typical passive volume control. The tone section provided separate Bass, Mid and Treble controls and could be completely bypassed. A Power Supply Built Like a Separate Amplifier. The power supply is one of the reasons the AX-2000 feels considerably more substantial than its specification sheet suggests. At its heart was a large 420VA shielded power transformer, supported by two 27,000μF high-capacity audio-grade electrolytic capacitors. More interestingly, Yamaha divided the amplifier into five independent power-supply systems. Separate supplies were provided for the power amplifier, analog circuitry, digital circuitry, visual circuitry, and control/display sections. For a late-1980s amplifier, this level of attention to digital/analog isolation is particularly revealing. Two-Box Construction Inside One Chassis. The AX-2000 was physically organized around a symmetrical two-box concept. The power amplifier section was arranged symmetrically for the left and right channels, with the large transformer positioned between them. Circuit boards were positioned toward the outer sides of the chassis, helping reduce the influence of magnetic fields generated by the transformer. The digital and preamplifier sections were also separated to reduce unwanted radiation from the digital circuitry. Yamaha went further by using a copper-plated chassis/fiberglass construction and a substantial internal frame intended to improve vibration resistance and reduce magnetic interference. The AX-2000 was not purely an audiophile stereo amplifier in the traditional sense. Its extensive video connectivity, digital inputs and outputs, surround-processor connections and remote control show Yamaha anticipating the rapidly developing relationship between high-fidelity audio and home AV. There were four analog recording outputs, two digital outputs and three video outputs, along with accessory connections for external processors. 

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YAMAHA KX-1000 (1988)

Technically, sonically, and in terms of feel this is a superb deck that achieves maximum quality. Featuring Dolby B/C NR, HX-PRO, and dbx NR, this 3-head deck brings together cutting-edge technology. The Yamaha KX-1000 stands out as a masterpiece of late-1980s audio engineering.

Yamaha KX-1000 Core Specifications

Configuration: Closed-loop dual capstan

Heads: 12-layer Amorphous (recording & playback), Double-gap ferrite (erasure).

Bias Adjustment: Dolby HX-PRO (dynamic) and Yamaha ORBiT (static).

Wow & Flutter: ±0.06% or less (W.Peak), 0.03% or less (W.RMS).

Frequency Response: 20Hz–20kHz (Normal), 20Hz–22kHz (Chrome), 20Hz–24kHz (Metal).

Signal-to-Noise Ratio: 57dB (NR Off), 65dB (Dolby B), 73dB (Dolby C), 95dB (dbx).

Dimensions: 435W × 141H × 379D mm, 

Weight 8.4 kg.

Original Retail Price: ¥89,800 (Japan).

Remote control standard equipment

A closed-loop dual-capstan system prevents modulation noise caused by tape vibration. If the tape tension is not uniform, the tape vibrates slightly with each recording/playback, generating modulation noise that distorts the input and output signals. The KX-1000 employs a closed-loop dual-capstan system with capstans in two locations: on the supply side and the take-up side. This keeps the tape at a constant tension, allowing for accurate recording and playback without unwanted vibrations. Dolby HX-PRO is built-in to enable smooth tape recording with excellent high-frequency response. Even when music has strong harmonic components, it prevents high-frequency attenuation due to excessive bias, and significantly improves the dynamic range. High-quality recording is possible regardless of tape type or whether noise reduction is on or off. A 210kHz high bias to prevent beat distortion and intermodulation noise. The bias frequency is double the conventional 105 kHz, employing a high bias of 210 kHz. This ensures sufficient distance between the audio signal and the bias, reducing beat distortion and intermodulation noise caused by signal interference, resulting in high-quality recording. Furthermore, the recording amplifier employs a constant current drive system, enabling ideal head drive that is independent of changes in head impedance. The noise reduction system incorporates Dolby B and C NR, as well as professional-grade dbx NR, to enable recording and playback with a high signal-to-noise ratio. By compressing and expanding across the entire audio frequency range, it not only reduces unpleasant high-frequency noise but also significantly improves the signal-to-noise ratio in the mid-to-low frequencies. Even CDs with a wide dynamic range can be recorded with virtually no loss of fidelity to the original sound. High-quality sound design achieved through OFC (Oxygen-Free Copper) construction of the entire signal system. Amorphous 12-layer laminated head. It employs a combination recording and playback head made of 12 layers of amorphous laminate. By using LC-OFC for the head windings, LC-OFC for the signal path wiring, and OFC for the printed circuit board, the entire signal path from input to output is made of OFC. This minimizes transmission distortion and enhances sound quality. In addition, as befits a high-end model, it features a playback amplifier with a dual FET DC amplifier configuration and incorporates audio-grade quality parts, demonstrating a high-quality sound design in every detail. Set the optimal bias value to match the tape. Equipped with Yamaha's unique ORBIT system. Equipped with Yamaha's unique ORBIT system, it ensures optimal recording characteristics regardless of the tape brand. By automatically recording and playing back a test signal, it displays whether the bias level is over or under. You can then adjust the bias volume to the optimal value. Independent power supply for the mechanical display and amplifier. The power supply features a large, massive 3-winding power transformer with separate windings for the mechanical/display system and the amplifier system. By eliminating magnetic loops that can muddy the sound, a clean sound is achieved. Equipped with a 28-key remote control that allows you to enjoy intro scan and program playback.

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YAMAHA CDX-2000 (1987) | 18-Bit DACs and Pure DAC Direct

The Yamaha CDX-2000 arrived in 1987 as a sophisticated evolution of Yamaha’s earlier high-bit CD players, combining advanced digital processing with exceptionally serious mechanical construction. Its 8× oversampling, independent 18-bit DACs, and unusual Pure DAC Direct output made it an intriguing proposition for enthusiasts who wanted to explore the possibilities of digital audio beyond conventional playback. With its titanium-colored front panel, gold-toned controls, substantial chassis, and imposing weight, the CDX-2000 also represented Yamaha’s high-end audio philosophy during the golden age of the compact disc.

Yamaha CDX-2000 – Main Specifications

Model: Yamaha CDX-2000

Year of introduction: 1987

Type: High-end CD player

Digital processing: 18-bit system with 8× oversampling

Digital filter: 18-bit, 8fs digital filter

D/A converters: Independent 18-bit twin DACs, one per channel

Digital outputs: Coaxial and optical

Signal-to-noise ratio: 118 dB (EIAJ)

Dynamic range: 100 dB or more (EIAJ)

Harmonic distortion: 0.002% or less (EIAJ)

Frequency response, Direct output: 2 Hz–20 kHz, ±0.1 dB

Digital volume control: 0.4 dB steps, using 20-bit processing

Wow and flutter: Below the measurement limit

Dimensions: 474 × 121 × 418 mm

Weight: 15.7 kg

Remote control: Yamaha RS-CDX2000, 44-key wireless remote

Original sale price in Germany: 2.700 DM

The CDX-2000’s appeal lies in its combination of digital precision, mechanical stability, and unusual signal-path flexibility. Yamaha did not simply concentrate on the DAC specification. The player was designed as a complete digital source, with separate attention given to filtering, conversion, power supplies, servo control, and vibration suppression. The Yamaha CDX-2000 employs an 18-bit digital filter operating at eight times the standard CD sampling frequency. Rather than processing audio exclusively at 44.1 kHz, the filter increases the sampling frequency to 352.8 kHz through high-precision digital calculations. This moves unwanted sampling-related noise into a higher frequency range, making it easier for the subsequent analog circuitry to handle. Yamaha specified an extremely precise filter response, with out-of-band noise attenuation of at least 100 dB and in-band ripple of no more than ±0.0001 dB. The filter’s complex processing structure was intended to preserve the accuracy of the audio signal while reducing the influence of digital filtering artifacts, including pre-echo and post-echo. The digital-to-analog conversion stage uses separate 18-bit DACs for the left and right channels. The DACs receive the 18-bit output of the digital filter, allowing the player to perform conversion at a resolution substantially beyond the 16-bit format of the original CD data. Yamaha’s design sought to improve the accuracy of low-level signal reproduction, particularly where quantization errors could become more significant. Independent conversion channels also reflect the company’s attention to channel separation and analog signal integrity. Pure DAC Direct: An Unusual Output Option. One of the CDX-2000’s most distinctive features is its Pure DAC Direct Switch. The player provides two types of analog output: Filtered output: The signal passes through the conventional analog low-pass filter. Pure DAC Direct output: The signal is taken directly from the DAC stage without passing through the low-pass filter. The direct output was an unusual feature for its time and offered enthusiasts the opportunity to compare the character of the DAC signal with the sound of the conventional filtered output. It is important to understand that bypassing the analog low-pass filter does not automatically mean a more accurate or universally superior result. The two outputs represent different signal paths, and the direct output may contain high-frequency components associated with the conversion process. The optical pickup mechanism uses a high-speed linear motor designed for rapid track access. Yamaha also paid considerable attention to the mechanical platform supporting the optical assembly. The transport is mounted on a heavyweight BMC base, intended to reduce resonance and limit the transmission of unwanted vibration to the pickup mechanism. The servo system incorporates a two-way computer-controlled design that automatically switches between fast and slow response characteristics. This arrangement was intended to balance rapid access with reliable disc tracking. The CDX-2000 uses a separated internal construction in which the digital servo, audio, and power-supply sections are arranged on independent circuit boards. Yamaha also incorporated a copper-plated VM stabilizer beneath the audio circuit section, designed to improve mechanical stability and suppress vibration. The audio output circuitry uses a two-stage current-based amplifier arrangement, intended to preserve the integrity of the audio signal while reducing the influence of digital noise. For a player introduced in 1987, this attention to internal organization is an important part of its high-end identity. Independent Power Supplies and Class-A Regulation. The power-supply architecture is one of the CDX-2000’s most substantial design features. The digital servo and audio sections are supplied by a large two-transformer power-supply arrangement, with independent shielding intended to reduce interference. The D/A converter and audio sections also employ separate shunt-regulator circuits operating in Class A. These circuits were designed to provide low-noise, low-impedance power delivery to sensitive analog stages. While specifications alone cannot establish how a player sounds, the architecture demonstrates Yamaha’s intention to treat the CDX-2000 as a serious high-end component rather than a conventional mass-market CD player. The CDX-2000’s physical construction is immediately noticeable. Its front, top, and side panels use rigid extruded aluminum, while a heavy bottom plate contributes to the overall structural strength of the cabinet. The player weighs approximately 15.7 kg, an impressive figure for a CD player of this period. The four large insulators combine sintered alloy, rubber vibration isolation, felt, and an aluminum cover.

These substantial feet were inherited from the design approach associated with Yamaha’s prestigious 10000 Series. The titanium-colored front panel and gold-toned operating controls further distinguish the CDX-2000 from more conventional Yamaha models. Features for Everyday Use. Although its engineering is the main attraction, the CDX-2000 was also equipped with an extensive collection of operating functions. Digital Volume Control. The player includes a variable digital volume control with adjustments in 0.4 dB steps. Yamaha specified a 120 dB dynamic range for the 20-bit volume-control processing system. The variable output could be useful in systems where the CD player was connected directly to a power amplifier or another component without a conventional volume control. However, digital attenuation can reduce effective resolution at lower listening levels, so many enthusiasts may still prefer to use a dedicated analog preamplifier. Search, Programming, and Display Functions. The CDX-2000 offers a comprehensive range of playback controls, including: Two-speed monitor search, Index search, Direct track selection, Manual - delete - and random programming modes, Single-track, all-track, program, and A/B repeat. Approximately three-second space insertion between tracks. 24-track music calendar. External timer compatibility. Independent track, index, and elapsed-time displays. Optical pickup position display. Output-level indication. The supplied 44-key RS-CDX2000 remote control provides access to nearly all major functions, including tray operation, programming, track selection, and volume adjustment.

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YAMAHA M-80 (1984) | AUTO CLASS A

The M-80 power amplifier was designed by Yamaha as a flagship high-end amplifier for listeners demanding both purity and serious power. With 250 watts per channel and technologies such as Auto Class A and Zero Distortion Rule (ZDR), the M-80 combines refined amplification with enormous dynamic reserves.

M-80 Main Specifications

Continuous sine-wave power, per channel:

250 W at 8 ohms, 20–20,000 Hz, 0.003% THD

290 W at 6 ohms, 20–20,000 Hz, 0.007% THD

340 W at 4 ohms, 20–20,000 Hz, 0.02% THD

Peak power: 380 / 480 / 640 / 850 W per channel at 8 / 6 / 4 / 2 ohms

Power bandwidth: 10–100,000 Hz at half rated power, 8 ohms

Frequency response: 20–20,000 Hz, +0 / −0.1 dB

Signal-to-noise ratio: 127 dB / 119 dB, IHF A

Total harmonic distortion: 0.002% at half rated power, 8 ohms

Dimensions: 435 × 165 × 425 mm

Weight: 23 kg

The technology: Auto Class A and ZDR Technology. Auto Class A circuitry is at the heart of the M-80's approach to amplification. At normal music levels, the amplifier operates in Class A, where low-level signals benefit from exceptionally low distortion and clean amplification. The design is based on the observation that around 95% of typical music power requirements fall within this operating range. When a musical peak suddenly demands substantially more power, the M-80 automatically switches to Class AB operation. This provides the additional output capability needed for demanding passages without requiring the amplifier to remain in high-power Class AB operation continuously. Zero Distortion Rule. The ZDR circuit addresses one of the traditional weaknesses associated with Class AB amplification: switching and crossover distortion. Integrated into the M-80's power-amplifier circuitry, ZDR is designed to suppress distortion introduced during the transition between output devices. It also counteracts distortion associated with the non-linear operation of the power transistors. The result is an amplification system intended to preserve the original music signal with the purity associated with Class A operation, while retaining the high-power capability of Class AB amplification. Massive Power Reserves for Difficult Loads. High-capacity capacitors and high-performance circuitry give the M-80 substantial reserves for sudden musical peaks. The amplifier is designed to remain reliable even when driving low-impedance loudspeakers. The specified peak output reaches an impressive 850 watts per channel into 2 ohms. For demanding speaker systems, that reserve can be particularly important when music contains rapid and substantial changes in level. 20-LED Peak Power Display. Twenty precision LEDs provide a visual indication of speaker load and amplifier output activity. An impedance control allows the display to be adjusted for 2-, 4-, and 8-ohm speakers. Peak memory is also provided, while the display sensitivity can be switched to a 10× range. Beyond its practical function, the large LED display gives the M-80 the unmistakable visual character expected from a serious vintage power amplifier. Three Speaker Pairs and Flexible Switching. Three speaker groups—A, B and C—can be selected using the amplifier's connection and switching system. The speakers can be operated independently, simultaneously, or in combined configurations. This gives the M-80 considerable flexibility for systems using multiple pairs of loudspeakers. The amplifier is also designed to handle low-impedance loads without distortion or unnecessarily triggering its protection circuitry. The specification for operation down to 2 ohms underlines just how seriously the M-80 was engineered for demanding loads. Heavy-Duty Speaker Connections. The speaker terminals accommodate different cable diameters, allowing both large-gauge speaker cables and conventional cables to be connected without soldering, crimping, or other special preparation. It is a small but significant detail that reflects the M-80's practical, high-power design philosophy. Protection and Additional Circuitry. An overload protection circuit monitors potentially dangerous operating conditions. If excessive power levels or a short circuit occurs, the protection system automatically shuts down the amplifier to help prevent damage to the M-80 and connected loudspeakers. Additional circuitry includes: DC gain configuration, DC protection circuit, Independent left/right level controls, A/B/C speaker-group selector. Original sale price in Germany: 2300 DM.

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YAMAHA AST-C30 (1989) | Tiffany Excellence

 

The Tiffany Excellence AST-C30 from 1989, with its fresh form, exudes elegance that refreshes even the impression of the music itself. A fresh, rounded form made possible only by Yamaha Active Servo Technology and long time time design partner GK Design. Furthermore, the clear mid-to-high frequencies are achieved through the refinement of sound quality using a 12cm PP cone midrange driver and a 2cm soft dome tweeter. A special Tiffany Excellence for those seeking high grade and elegance. Moreover, the design prioritizes sound quality from an audio perspective, with the midrange and tweeter placed in separate boxes and the woofer positioned externally, truly embodying functional beauty. It's a highly sophisticated design that won a Grand Prize in its category at the Good Design Awards. (1989 Good Design Award Section Grand Prize (Japan Institute of Design Promotion). Of course, thanks to Yamaha Active Servo Technology (developed in cooperation with Sharp), the high-quality new deep bass and clear sound remain unequalled. The AST-C30 is a special model for discerning individuals who demand more from music. Its unique form asserts its presence without being lost in the interior, while also possessing a beauty that considers total coordination. A handsome design that caters to a fresh aesthetic sense, one step ahead of the times. The Tiffany Excellence AST-C30 is a beautiful instrument for music, excellently enhancing a high-class and elegant room. Specifications: 50W+50W | Main unit size 300x268x294mm | Weight 8kg | Speaker size 324x232x232mm | Weight 4,3kg | Original sale price in Japan: 178,000 yen (with remote control, excluding tax)

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YAMAHA M-2 (1980) | High-fT Power

 

This power amplifier was originally released in Japan in 1979 as the B-5, quickly followed by this international market M-2 with added power level meters. The M-2 is a Natural Sound High-Performance Power Amplifier - The Authority of True Sound. Power alone does not define greatness — control does. The M-2 stands as a testament to Yamaha’s relentless pursuit of sonic truth, where immense output is harnessed with absolute precision. At its core lies an advanced circuit architecture: a low-noise dual FET input stage in cascode bootstrap configuration, seamlessly feeding a current mirror driver and a meticulously engineered three-stage complementary push-pull output. Guided by Yamaha’s exclusive Linear Transfer Bias system, the M-2 achieves what lesser amplifiers cannot—vanishingly low crossover distortion and a purity of tone that remains uncolored, even under the most demanding conditions. Each stage operates in perfect harmony, balancing wide bandwidth performance with carefully applied negative feedback, ensuring that every nuance of the music is preserved intact. Transcending the Limits of Conventional Design. Traditional power transistors, long constrained by thermal instability and switching distortion, have been reimagined. Yamaha’s specially developed high-frequency power transistors defy these limitations, maintaining stability where others falter. The result is a clarity that extends effortlessly into the highest frequencies, free from harshness or strain. Fine detail emerges naturally, supported by a seemingly endless reserve of power—delivered with authority, yet never at the expense of musicality. Linear Transfer Bias — Precision at the Threshold. At the heart of the M-2’s remarkable transparency lies the Linear Transfer Bias circuit. By precisely controlling the operating point of each output transistor, Yamaha eliminates the discontinuities that typically plague push-pull designs. The effect is profound: a smooth, continuous transfer characteristic that virtually erases crossover distortion, particularly in the delicate low-level signals where music breathes and lives. Whether delivering a whisper or a crescendo, the M-2 maintains its composure, its accuracy unwavering. Performance You Can See — Purity You Can Hear. Measured at a demanding 20 kHz, distortion remains extraordinarily low across a wide output range—from a commanding 200 watts down to just 2 watts. Where conventional designs falter at lower levels, the M-2 remains composed, preserving the integrity of even the faintest musical detail. Crafted Without Compromise. In a component of this caliber, nothing is incidental. Every detail, every material, every connection is chosen with singular purpose. A centrally mounted toroidal transformer anchors the design, flanked by massive filter capacitors to ensure optimal energy flow. Signal paths are kept exceptionally short, while thick copper bus bars provide a flawless grounding foundation. Circuit boards feature heavy copper traces for superior current handling, and carefully selected components—from phase-accurate polystyrene capacitors to induction-free resistors—preserve signal integrity at every stage. Gold-plated terminals, precision coaxial cabling, and meticulous internal layout reflect a philosophy where engineering and craftsmanship are inseparable. The M-2 is not merely an amplifier. It is an instrument—designed to reveal music in its most natural, unrestrained form. Specifications: Power rating 200 W/ch (0,005% THD) | Damping factor 200 | Frequency response DC - 100.000 Hz | Size (W/H/D) 435x183x362mm | Weight 23kg | Original sale price in Germany 2590 DM

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YAMAHA CA-2010 (1978) | Real Life Rated™

 

The Yamaha CA-2010 integrated amplifier was engineered as a true high-end alternative to separate preamp and power amp combinations, delivering reference-level performance within a single, meticulously constructed chassis. Designed for serious audiophiles, it features a built-in moving coil head amplifier—activated via a front-panel switch—eliminating the need for external step-up transformers while preserving the transparent highs and extended frequency response demanded by low-output MC cartridges. For moving magnet users, a 3-position phono impedance selector ensures optimal cartridge matching and maximum vinyl performance. The precision preamplifier section offers bass and treble controls calibrated in accurate 12 dB steps, with dual turnover frequencies for enhanced tonal flexibility, while completely independent Input and Output selectors allow recording one source while listening to another. The illuminated twin power meters can be switched to REC OUT millivolt readings for precise tape deck level monitoring, ensuring clean, distortion-free recordings. Rated at 120 watts RMS per channel into 8 ohms with no more than 0.03% THD from 20 Hz to 20 kHz, the CA-2010 also offers switchable DC operation for tighter bass response and front-panel selectable pure Class A mode delivering 30 watts RMS per channel with an ultra-low 0.005% THD across the same bandwidth. Yamaha’s Real Life Rated™ philosophy measured total performance from phono input to speaker output, introducing the Noise-Distortion Clearance Range (NDCR) standard, which guarantees no more than 0.1% combined noise and distortion from 20 Hz to 20 kHz at any output level between 0.1 watts and full rated power. Fast-rise, peak-delay meters track transient bursts from 1 mW to 316 W (8 ohms), underscoring the amplifier’s dynamic authority. Rooted in Yamaha’s long-standing musical instrument heritage, the CA-2010 delivers exceptional tonal accuracy, clarity, and natural musicality, making it one of the most respected and collectible vintage integrated amplifiers of its era.

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YAMAHA 101M (1982)

 

The Yamaha 101M represents the ultimate expression of Yamaha’s high-power amplifier design and is widely regarded as one of the most formidable Japanese reference amplifiers ever produced. Built with no compromise, it delivers a massive 500W + 500W into 8Ω and up to 750W + 750W into 4Ω, with mono BTL operation capable of an astonishing 1.5kW. Designed for professional use (as Yamaha PC5002M) and reference Hi-Fi use, the 101M features a fully dual-mono architecture, an enormous power supply (immense 300,000μF reservoir capacitance) with separate left and right channel mains plug, and exceptional build quality, all housed in a rugged 61 kg aluminum chassis. Beyond its sheer power, the Yamaha 101M is celebrated for its clean, authoritative, and highly controlled sound. Yamaha’s advanced distortion-cancellation circuitry achieves an ultra-low 0.003% THD, allowing the amplifier to remain transparent and composed even at extreme output levels. With balanced and unbalanced inputs, subsonic filtering, and a large precision peak power meter, the 101M offers both visual impact and serious performance. Rare, iconic, and unmistakably professional, the Yamaha 101M remains one of the most desirable vintage high-power amplifiers for collectors and demanding audiophiles alike. Specifications: Continuous power 500W + 500W at 8 Ohm 0,003% and 1.500W in mono bridged operation | Total harmonic distortion 0,002% | Frequency response: 10-100.000Hz | Dimensions (W/H/D) 482x264x441mm | Weight 61 kg | Original sale price in Germany aprox. 11.000 DM

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YAMAHA CA-1000II (1976) | Strong & Clear Power

 

Semi-professional, integrated pre- and power amplifier for the highest high-fidelity demands, with an extremely low-distortion power amplifier and, in addition, the option to switch to "Class A" operation to eliminate all crossover distortion. It has a built-in Class A/B switching circuit, providing high output in Class B mode and high clarity in Class A mode. All circuits have been analyzed using computer-aided CAD techniques. Two-stage tone control. Two tape inputs and option for tape-to-tape copies in both directions. Microphone input. Continuously adjustable loudness. High and low filters with two switch positions. Audio muting -20 dB. Switchable phono input impedance. Pre- and power amplifier separable. Connection for three speaker groups. Headphone output. 

Specifications:

Power Class A: 2x15W 8ohm

Power Class B: 2x80W 8ohm

Frequency response: 10-50.000 Hz

Size (W/H/D): 438x144x323mm

Weight: 15,5kg

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YAMAHA NS-10M (1978) – The Compact Monitor That Changed Studio Sound Forever

 

When talking about legendary loudspeakers, the Yamaha NS-10M stands shoulder-to-shoulder with Yamaha masterpieces such as the NS-1000M. Launched in 1978, this unassuming compact speaker went on to sell over 300,000 units, becoming one of the most recognizable and influential monitors in the world. Today it is synonymous with near-field studio monitoring, but its origins are quite different — it was initially created as an affordable, youth-oriented Hi-Fi speaker, a successor to the NS-451 from 1976. Yamaha even sold it in pairs — unusual at the time — packaged in a trendy, easy-to-carry box and priced at 50,000 yen per set. Compact, attractive, and surprisingly powerful, the NS-10M broke all expectations for a speaker of its size and ignited a worldwide boom. Inside the cabinet, Yamaha employed a refined version of its well-known white-cone woofer, redesigned as an 18 cm unit with a ferrite magnet and optimized for sealed-box performance. The 3.5 cm soft-dome tweeter, based on the NS-690II, delivered a clean, high-purity top end — so pure that Yamaha eliminated the traditional level control altogether. The result was a speaker capable of revealing the true character of recordings, a quality that quickly attracted professional sound engineers. What started as a compact Hi-Fi speaker for home use ended up in recording studios all over the world. Producers, mixers, and musicians adopted the NS-10M for its brutally honest midrange, excellent imaging, and ability to expose flaws that other speakers glossed over. Its influence became so widespread that the NS-10M turned into an industry standard — a reference point for music production that remains legendary to this day. The initial model, NS-10M introduced in 1978 was followed by a series of upgrades: NS-10M PRO (1987), NS-10MC (1987), NS-10MC (1993) and the NS-10MT (1995).

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YAMAHA MX-2000 (1988)

 

A cutting-edge power amplifier that achieves ideal Class A operation, with a focus on low impedance and drivability. Class A operation over the entire load and power range. HCA (Hyperbolic Transform Amplification) circuit. Conventional Class A amplifiers have struggled to achieve high power, especially when driving low impedance, but Yamaha's unique HCA circuit has been incorporated into this amplifier. This circuit achieves Class A operation over the entire load and power range. Furthermore, because the HCA circuit operates as a pure converter with no feedback loop or gain, transient response is always excellent. High-power 4-parallel push-pull amplifier with MOS FET power buffer. The output element of the power buffer stage employs a power MOS FET, known as the most advanced audio output element available today. Because the power MOS FET is a voltage-controlled element with high input impedance, it places less strain on the driver stage and allows for circuit simplification, among other advantages. The MX-2000 employs eight of these power MOS FETs per channel in a quad-parallel push-pull configuration, achieving a Class A rated output of 150W + 150W (6 ohm). Combined with the inclusion of an HCA circuit, this achieves a high Class A dynamic power output of 600W + 600W (1 ohm). A dual FET input voltage amplifier that achieves wide bandwidth and high slew rate. The first stage voltage amplifier, which amplifies the voltage, uses the most sophisticated dual differential input cascode boost circuit configuration. The AK4110 employs a strap circuit, which provides outstanding wideband characteristics and a high slew rate that is resistant to transient inputs. Furthermore, by positioning the voltage amplifier board close to the input terminals, it achieves low noise and a high S/N ratio. Relay and output coil distortion is also eliminated. Direct error correction amplifier. To ensure perfect matching with the connected speaker system and stable drive capability, only one speaker output is provided. Furthermore, by using only one output, overall distortion from input to output is thoroughly eliminated by incorporating a unique direct error correction amplifier. The unit achieves a low harmonic distortion of 0.003% (8 ohm 20-20,000Hz, 130W output), and a damping factor (a measure of speaker drive capability) of over 1000. High-quality design throughout. A new low-resonance chimney type heat sinker has been adopted. By adopting an oval shape that eliminates sharp angles in the heat dissipation section, the buzzing of the heat sinker due to resonance has been eliminated. In addition, luxurious gold-plated pass bars are embedded in the power stage board, promoting the transfer impedance of the power line and output line. Furthermore, audio-grade electrolytic capacitors are used throughout, ensuring a high-quality design. 420VA large massive power transformer. 20,000/F x 2 low-magnification electrolytic capacitors. The power supply section is designed to be just what is necessary and sufficient, with careful consideration given to power regulation and noise characteristics. It features a large, massive 420VA power transformer with an EI core and two 20,000µF electrolytic capacitors. Combined with the weight-optimized power transformer, this delivers a high-quality sound that simply cannot be achieved with large capacity. 

It is also equipped with a high-speed peak level meter that allows you to accurately read the output level. To ensure accurate readings of speaker output levels that change moment by moment in response to the music signal, the unit is equipped with independent left and right dB-scale logarithmic compression high-speed peak level meters. A protection-linked speaker switch that turns speaker output on and off while in power standby mode. ●Independent left and right detent-type input attenuators. ●Gold-plated brass pin jack terminals. ●Gold-plated brass speaker terminals compatible with extra-thick cables. Extra thick OFC power cord with polarity indicator. Specifications: ● Rated Output: 130W + 130 W (8 ohm 20-20,000Hz, up to 0.003%), 150W + 150W (6 ohm 20-20,000Hz, up to 0.003%), 180W + 180W (4 ohm 20-20,000Hz, distortion 0.01%) ● Frequency Response: 5-100,000 Hz ● Total Harmonic Distortion: 0.003% (8 ohm 20-20,000Hz - 130W) ● S/N Ratio: 125dB (IHF-A input shorted) ● Channel Separation: 95dB (1kHz, input shorted) ● Dimensions: 473 W x 170 H x 469 mm ● Weight: 28kg | Titanium color | Matching pre-amplifier CX-2000.

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