DUAL CV 1500 RC (1980) | Computer Controlled

 

High-Fidelity amplifier CV 1500 RC from DUAL Germany. This was a Infrared remote controled model from the 1980 model range of this prestigious manufacturer best known for their turntables. It is a 2 x 60 watts RMS. 2 x 100 watts music power stereo integrated amplifier with "Microprocessor control". Optional manual operation with solenoid pushbuttons. Microphone input with pre-level control. Highly effective low and high filters. Mute button. Input for 2 turntables, 2 tape recorders, and tuner. Monitor for both tape inputs. Direct tape-to-tape dubbing. 4 speaker outputs. Built-in infrared receiver that offers remote control operation via the optional RC 154 transmitter. Dimensions: 440 x 150 x 360 mm (W x H x D). Finishes: metallic silver and metallic brown. Recommended HiFi speakers were the Dual CL 730, CL 720. Original sale in Germany (only available with matching CT-1540 tuner): 2298 DM 

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

harman/kardon CD491 (1983) | Ultrawideband Linear Phase

 

The harman/kardon CD491 represents one of the pinnacle of the company's cassette deck engineering, delivering audiophile-grade performance that rivals the original source material. Designed for serious music enthusiasts and demanding recording applications, the CD491 achieves an exceptional frequency response of 20Hz to 24kHz (±3dB) with virtually any tape formulation, placing it among the most advanced cassette decks ever produced. At the heart of the CD491 is Dolby HX Pro, an advanced headroom extension system that dynamically optimizes high-frequency recording performance. By reducing distortion and extending frequency response at elevated recording levels, Dolby HX Pro enables cleaner, more accurate recordings with greater dynamic range. Combined with Dolby C noise reduction, the CD491 achieves an impressive signal-to-noise ratio of 75dB. When used with high-quality metal tape, Dolby C, and Dolby HX Pro, the deck delivers a remarkable 20Hz to 20kHz frequency response at 0dB recording level (±3dB), ensuring faithful reproduction of even the most demanding digital and analog program material. The CD491 features a true three-head configuration, allowing real-time monitoring during recording and providing superior recording accuracy. The deck utilizes a high-performance Sendust recording head capable of handling elevated recording levels without overload, while a precision ferrite playback head ensures outstanding high-frequency extension and detail retrieval. Both heads are meticulously aligned within a single housing to maintain optimal tracking accuracy and consistent performance. To maximize compatibility with a wide variety of cassette formulations, the CD491 incorporates built-in tone generators for bias adjustment and record calibration. These tools allow users to precisely match recording parameters to individual tapes, optimizing frequency response, recording accuracy, and Dolby tracking. Dual Dolby B and Dolby C noise reduction systems further enhance playback quality while reducing tape hiss and preserving low-level musical detail. A standout feature of the Harman Kardon CD491 is its unique meter weighting system. This sophisticated circuit analyzes the frequency content of incoming audio and helps determine the optimum recording level for each program source. The information is displayed on highly accurate 16-segment peak level meters, allowing users to record at the highest possible level without risking tape saturation or distortion. The meter range extends from -30dB to +10dB, providing excellent visibility and control during recording sessions. The CD491 employs a precision closed-loop dual-capstan transport system designed to maintain stable tape handling, minimize wow and flutter, and improve overall playback consistency. Additional convenience features include bi-directional automatic music search, Auto Space for precise cueing between tracks, Auto Repeat playback, an electronic digital display, and a real-time tape counter that also functions as a conventional tape counter. Combining wide frequency response, Dolby HX Pro technology, precision tape calibration, three-head monitoring, and a closed-loop dual-capstan transport, the Harman Kardon CD491 established itself as one of the finest cassette decks of its era. Rather than comparing the CD491 to other tape decks, Harman Kardon encouraged listeners to compare it directly to the source recording itself — a testament to the deck's extraordinary recording accuracy and reference-level performance. Specifications: Heads: 3 Sendust/Ferrite | Motors Direct Drive 2+1 motor system | Wow & Flutter 0,025% | Frequency response 20Hz-24kHz (maxell UD-XLI, TDK SA) 20Hz-26kHz Metal tape | Dimensions (W/H/D) 440x122x343mm | Weight 8,2kg | Original sale price in Germany 2000-2250 DM ( 1983-1986)

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

National NV-DS1 (1988) | Digital & Hi-Fi

 

The National (Panasonic) NV-DS1 introduced in 1988 features Multi-Digital play that allows "a flexible and creative visual expression" of your video material. The enjoyment of AV deepens even further when you recreate various video scenes exactly as you want. 8-bit digital processing allows for 9-screen playback, strobe effects, graphic art, mosaics, and digital combinations of these. You can enjoy a variety of special effects, including mixing. The LCD multi-digital controller allows for centralized operation. Based on the high image quality of the S-VHS system, it delivers finely detailed digital images. The "8WD system" which creates the image, reproduces multi-digital play and Fine Slow motion more beautifully. Hi-Fi sound. The richness of the sound is further enhanced. Digital sub-bass sound offers a large scale sense of presence. Even double bass is reproduced with powerful bass. The basic sound is Hi-Fi with a dynamic range of 90dB or more. Audio-grade aluminum electrolytic capacitors improve the sound's attack and the clarity of the mid and high frequencies. Sub-bass reproduction has two selectable positions (music) depending on the source. Other features include: Title creation - digital. Barcode title input. Built-in title editing function. Create original titles with the same easy operation as barcode.

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

Accuphase P-500 (1985) | Built for Perfect Pitch

Built for Perfect Pitch. There are limits in high-end audio that only the finest components can reach — and only true audiophiles can fully appreciate. The name Accuphase has long been synonymous with uncompromising sound quality, precision engineering, and timeless craftsmanship. Developed by a dedicated team of experienced audio engineers, every Accuphase amplifier is designed and built to achieve a level of performance that pushes the boundaries of modern audio technology. Rather than following short-lived market trends, Accuphase focuses on one goal: absolute sound reproduction combined with elegant, timeless design. The P-500 from 1985 was a Stereo Power Amplifier Engineered for the New Era of High-End Audio. This Accuphase stereo power amplifier combines legendary Accuphase engineering with advanced circuit design to deliver exceptional power, ultra-low distortion, and remarkable stability under all listening conditions. The output stage features six parallel push-pull power transistors per channel, utilizing high-power 150W collector-loss devices for a total of 12 output transistors per channel. With a theoretical maximum output capability of 4,200 watts, the amplifier maintains substantial operating headroom, ensuring outstanding reliability, effortless dynamics, and superior speaker control even at high output levels. To minimize switching distortion at low listening levels, the operating points are precisely controlled so that both the PNP and NPN output devices remain continuously active without signal cutoff. This advanced configuration delivers smooth, natural sound reproduction with exceptional clarity and transparency across the entire frequency range. The driver stage employs high-grade MOS-FET devices operating in a non-switching Class A equivalent configuration with a cascode push-pull topology. The preceding signal stage also utilizes a pure Class A cascode push-pull design, contributing to excellent linearity, low noise, and stable performance from delicate low-level passages to full-rated output power. A direct-coupled input configuration preserves signal purity and musical detail. To protect loudspeakers from potential damage caused by DC drift from connected preamplifiers, Accuphase’s proprietary DC servo system automatically eliminates unwanted DC components while stabilizing the amplifier against temperature-related drift. For maximum system flexibility, the amplifier provides both a standard 20kΩ input and a fully balanced 40kΩ balanced input connection for enhanced noise rejection and improved signal integrity. A built-in subsonic filter eliminates frequencies below 10Hz using carefully selected high-quality components that preserve overall sound quality without affecting the audible frequency range. The amplifier is also equipped with a precision analog power meter capable of directly displaying both dB levels and output wattage. Logarithmic compression enables accurate monitoring across a wide power range from -60dB to +3dB. A dedicated switch allows the meter illumination and display to be turned off when desired. For even greater versatility, the amplifier can also operate in bridged mono mode, transforming it into a high-performance monaural power amplifier capable of driving demanding speaker systems with exceptional authority and control. Specifications: Continuous average power 250W/ch RMS 8ohm | Dimensions (W/H/D) 480x218x445mm | Weight 33,5kg

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

 

Nakamichi CR-30 (1988) | Discrete Head

 

The Nakamichi CR-30 was created at the pinnacle of analog tape engineering of the brand. Combining legendary Nakamichi innovation with meticulous hand-tuned precision for exceptional sound reproduction. At the heart of the deck is Nakamichi’s renowned discrete 3-head system, featuring completely independent recording, playback, and erase heads. Unlike conventional combination head designs, this architecture eliminates high-frequency degradation caused by azimuth misalignment during recording, ensuring superior accuracy, clarity, and detail retrieval. The precision-engineered heads are constructed from durable Crystalloy material and utilize a proprietary head contour design that maintains an optimally polished surface throughout extended use. This advanced construction minimizes uneven wear and preserves near-new performance for over 10,000 hours of operation according to Nakamichi testing standards. For outstanding tape stability and reduced modulation noise, the transport mechanism uses a closed-loop dual-capstan system. By carefully controlling the rotational speed differential between the capstans, the system maintains ideal tape tension and consistent head contact without relying on pressure pads or tape guides. The sophisticated multi-regulated power supply isolates individual circuits to eliminate electrical interference and maximize performance consistency. High-speed discrete voltage regulators deliver exceptional response speed and stability through a design philosophy comparable to high-end separate audio components. Additional refinements include a silent transport mechanism, reference-grade DC amplifier circuitry, and a dual-mono amplifier configuration for superior channel separation and imaging accuracy. Acoustic isolation insulators further reduce the effects of external vibration, preserving low-level detail and sonic purity. The deck incorporates advanced Dolby B and Dolby C noise reduction systems for cleaner recordings with reduced tape hiss. Independent equalizer switching provides optimized playback compatibility across multiple tape formulations, while a tape slack prevention system enhances transport reliability. Convenience and connectivity features include adjustable output level control, headphone output, system remote terminals, and premium gold-plated input/output connectors for improved signal integrity. Each Nakamichi CR Series deck undergoes an extraordinary level of factory calibration and quality control. Approximately 30 internal adjustment points are meticulously optimized during production to minimize unit-to-unit variation and achieve reference-level performance. Unlike conventional cassette decks that offer limited bias calibration, the CR Series features six precision bias adjustment potentiometers for accurate optimization across all tape types and operating positions. To ensure uncompromising quality, every fully calibrated unit is subjected to 56 separate performance measurements before shipment. Only decks that meet Nakamichi’s exacting specifications are approved for release, delivering the exceptional analog fidelity and reliability that define the Nakamichi legacy. Specifications: 3-head system | 2+1 DC motor | Wow and Flutter 0,035% RMS | Frequency response 20-20.000Hz Metal tape -20db | Dimensions (W/H/D) 430x100x265mm | Weight 5,8kg | Various Market versions are: CR-3, CR-3A, CR-3E, CR-30

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

Bi10 (Fujitsu Ten) (1985)

 

The Bi10 D Series by Fujitsu Ten represents a sophisticated fusion of sound and design, engineered specifically for the unique acoustic environment of the automobile. Developed with a driver-focused philosophy, the Bi10 system combines advanced audio technology, intelligent functionality, and refined aesthetics to deliver a premium in-car listening experience. Every component in the Bi10 D Series is designed to work in perfect synergy, creating powerful, high-quality sound throughout the vehicle interior. From the auto-reverse cassette deck with dual azimuth mechanism to the graphic equalizer featuring test tone functionality for precise sound field correction, each unit contributes to a balanced and immersive car audio system. The result is clear, dynamic, and accurate sound reproduction tailored to the challenges of automotive acoustics. The Bi10 D Series also introduced a distinctive visual identity with innovative 2-way illumination technology. Drivers could switch the panel lighting between green and orange, allowing the system to match different vehicle interiors and personal preferences. Illuminated indicators clearly display active functions and system status, combining style with enhanced usability and visibility. Powered by advanced microcontroller technology, the Bi10 D Series offers smoother operation, faster tuner response, simplified equalizer controls, and safer usability while driving. Every detail has been designed with the driver in mind, ensuring intuitive control without distraction. Unlike conventional home audio systems, car audio must overcome limited cabin space, changing passenger conditions, vibrations, and sound-absorbing materials such as seats and carpets. The Bi10 D Series was created from the perspective of the car itself, delivering an audio solution specifically engineered for the mobile environment. Combining technical innovation, system expandability, elegant styling, and seamless integration with the vehicle, the Bi10 D Series reflects a new era of automotive sound engineering from Fujitsu Ten. System components are: QD-580 cassette deck (65.800 Yen), QT-580 FM Stereo tuner (46.800 Yen), QE-580 equalizer (49.000 Yen), QM-570 25W/ch amplifier (29.000 Yen), SD-1100 CD player (94.000 Yen), Z701 4-way speaker system (70.000 Yen)

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

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)

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

DIATONE DA-U750 (1975)

 

The Diatone DA-U750, released by Mitsubishi in 1975, was one of the company’s top integrated amplifier and one of the finest examples of 1970s Japanese amplifier engineering. Although Diatone is best known for its loudspeakers, the DA-U750 demonstrated the brand’s serious commitment to high-end amplifier design, incorporating technology later used in the separate DA-P10 and DA-A10 series. One of its most distinctive features was the dual-block internal construction, with the preamplifier and power amplifier sections physically separated at the front and rear of the chassis. The power amplifier block was independently shielded to minimize heat and magnetic interference from the power supply, improving stability, reliability, and long-term performance. The fully direct-coupled pure complementary OCL power amplifier used carefully matched transistor pairs in both the driver and output stages to reduce distortion and preserve dynamic range, delivering 90W + 90W into 4Ω. The equalizer amplifier employed proprietary ultra-low-noise transistors developed using Mitsubishi’s low-concentration diffusion technology, achieving improved noise performance and excellent phono sensitivity. Diatone also designed the amplifier using simulated cartridges and speakers to optimize real-world dynamic performance rather than relying only on laboratory measurements. Additional features included precision tone and presence controls with selectable turnover frequencies, a high-accuracy 22-contact attenuator, multiple low-cut and high-cut filters, extensive input and tape dubbing facilities, and beautifully machined solid metalic knobs. Combining advanced engineering with luxurious construction, the DA-U750 remains one of the most respected vintage Diatone integrated amplifiers. Size (W/H/D) 425x148x387mm | Weight 17kg | Original sale price in Japan ¥ 98,800

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

Lo-D D-E90 (1980) | Excite Over! E90

 

The Lo-D (Hitachi) D-E90 cassette deck, released in 1980, represented the brand’s commitment to advanced analog audio engineering and user-focused design. By the late 1970s, Lo-D had already established itself as a pioneer in cassette deck technology, including the development of Japan’s — and arguably the world’s — first 3-head cassette deck equipped with a combination head in 1973. Building on that legacy, the D-E90 evolved from the successful D-90s model and brought premium 3-head recording technology to the mid-range hi-fi market at a more accessible price point. At the heart of the D-E90 was Lo-D’s renowned closed-gap metal recording and playback head system. This advanced ferrite combination head used newly developed High Bs ferrite material with high magnetic flux density, allowing separate recording and playback functions within a compact design. The recording head featured a precision 6μ gap, while the playback head used an ultra-fine 1μ gap for enhanced detail retrieval and frequency response. Finished with a mirror-polished titanium spray coating, the head assembly delivered smooth tape travel, highly stable tape-to-head contact, and minimal monitoring delay. Direct coupling between the head and the amplifier’s first-stage FET further improved signal-to-noise performance and audio clarity.

The transport mechanism utilized a sophisticated dual-motor, dual-capstan system designed for highly accurate tape handling. A DC servo motor controlled the capstan drive, while separate DC motors handled fast-forward, rewind, and take-up functions. Dual capstans and pinch rollers positioned on both sides of the tape path ensured excellent tape stability and minimized modulation noise and level fluctuation. This precision engineering enabled an impressive wow and flutter specification of just 0.038%, delivering exceptionally stable playback performance. Lo-D also equipped the D-E90 with an advanced microprocessor-controlled transport system that expanded upon traditional IC logic circuitry. Feather-touch electronic controls provided smooth operation, while several innovative convenience features enhanced usability. For noise reduction, the deck featured Dolby B Noise Reduction. Tape support covered four formulations: normal, chrome, ferrochrome, and metal tapes. Instead of the fully automated ATRS calibration system found on Lo-D’s flagship models, the D-E90 provided manual bias fine adjustment and REC CAL recording sensitivity calibration, allowing users to optimize recordings for different cassette brands and tape types. Additional features included a timer recording safeguard that flashed an indicator to help prevent accidental erasure after timer activation, along with a distinctive level display combining large analog VU meters and a five-point LED peak indicator system for accurate monitoring. Despite being positioned as a mid-range cassette deck, the Lo-D D-E90 offered a remarkably complete feature set, precision engineering, and refined sound quality. Its slim, elegant styling gave it a sophisticated appearance that complemented its clean, balanced recording and playback characteristics. The D-E90 would later serve as the foundation for the more advanced D-1100MB, further cementing its place in the evolution of high-performance Japanese cassette decks. Specifications: Recording/Playback Head: 1.4mm Close-Gap Metal R&P Combination Head + Erase Head: Ferrite Guard Double-Gap Metal Erase Head | Motor: DC Servo Motor (for Capstan) x 1, DC Motor (for Reel) x 1 | Wow & Flutter: 0.038% (WRMS) | Frequency Response: 20-21,000Hz (Metal), 20-20,000Hz (Chrome), 20-18,000Hz (Ferric-Chrome/Normal) | S/N Ratio (Metal Tape 3% Distortion Level Audible Correction): 69dB (DOLBY-NR-ON), 61dB (DOLBY-NR-OFF) | External dimensions: Width 435 x Height 110 x Depth 266 | Weight: 6.0g | Original sale price in Japan ¥79,800 (998 DM Germany) | Remote control unit RB-100 (¥6,000) sold separately 

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi

SHARP VC-FX61 (1989)

 

The VC-F61 from Sharp, introduced in 1989 achieves a horizontal resolution of over 400 lines in S-VHS video mde. It achieves sharp, high-definition images approaching those of broadcast-grade 1-inch video. The unit and remote control feature jog shuttles, and a flying erase head that allows for easy editing of recorded footage frame by frame. List of features include: S-VHS video, 145x high-speed FF/REW, Movie sync terminal, Y/C separation comb filter, HiFi Stereo audio, jog shuttle, digital auto tracking, flying erase head, On-screen display, insert dubbing, Tape remaining time display, 36x speed video search. Size (W/H/D) 430x407x106mm | Weight 8,7kg | Original sale price in Japan: 162.900 Yen.

Looking for more? Head to 1001hifi.com for everything vintage audio.

Like Our Work? Support 1001 Hi-Fi