AKAI AP-Q80C (1980) | Unitorque Discolith

 

The AP-Q80C was introduced by Akai in 1980. This turntable features a robust die-cast chassis house with two motors, one of which regulates the speeds with quartz precision, and one for arm movement. The AP-Q80C turntable also features a microprocessor that will eliminate many manual steps. Regardless of the record size, it reliably selects the exact starting point and automatically switches the appropriate playback speed. Including the Ortofon LMB 12 cartridge, all the prerequisites for the most careful handling of your record collection are met. Operating errors are a thing of the past. If you want to listen to hi-fi music continuously, the repeat function is there for you. And if you want to fine-tune the record speed to your listening preferences, you can do so via the pitch control. To control it's functions there are a series of touch sensitive controls and a Digital display for selected speed and it's accuracy. Specifications: Full Automatic | Drive: Quartz Direct Drive Unitorque Discolith motor | Tonearm length: 220mm | Size (W/H/D) 440x140x403 | Weight 11kg | Original sale price in Germany 1150 DM 

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GRUNDIG RPC-450 (1978) | HiFi Studio

 

The Grundig HiFi Studio RPC 450 was one of the flagship all-in-one hi-fi music systems of its era, combining premium audio performance with advanced features and elegant styling. Designed as a true high-end integrated system, it brought together a powerful stereo receiver, automatic direct-drive turntable, Dolby-equipped cassette deck, and matching three-way speakers, delivering performance comparable to separate hi-fi components. A standout feature was its digital frequency display, which precisely indicated the tuned radio frequency and, on FM, could also display the selected station channel for exceptionally accurate tuning. At the heart of the system is a powerful receiver and amplifier section rated at 2 x 50 watts music power (2 x 30 watts RMS), featuring 18 touch-sensitive controls for convenient operation and reception across FM, MW, and LW wavebands. The integrated Dual 491 A automatic turntable is equipped with a direct-drive motor, an S-shaped tonearm, anti-skating adjustment, cueing lever, illuminated stroboscope, and a Shure DM 95 G magnetic cartridge, providing outstanding tracking accuracy and stable playback. The built-in hi-fi cassette deck complements the system with Dolby Noise Reduction, Variable Fade Technology (VAT), automatic stereo recording, a three-position tape selector for all cassette formulations, and a memory tape counter for added convenience. Completing the package are the Grundig HiFi Speaker 850, professional three-way loudspeakers featuring a woofer, dome midrange, and dome tweeter housed in stylish cabinets with removable grilles. Rated at 80 watts music power (50 watts nominal) with a frequency response extending down to 35 Hz and up to 26 kHz, they provide dynamic, full-range sound. Available in walnut, graphite metallic, or metallic light finishes, these speakers perfectly complement the sophisticated design and exceptional performance of the Grundig HiFi Studio RPC 450.

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SANSUI AU-405 (1999) | Pure Non NF

 

The AU-405 from Sansui introduced in 1999, a wide-range DC amplifier, was the world's first Pure Non NF circuit amplifier for vividly reproducing next-generation, high-quality digital sources. Built to experience realistic sound reproduction close to the original recording, thanks to the astonishing specifications of the new generation of Super Audio CD and DVD Audio (frequency range DC to 100kHz, dynamic range of over 120dB). This ultra-wide-range DC amplifier is unlike anything you'd expect from a mass-market device. The Pure Non NF circuit, which uses no feedback in the output stage, achieves powerful speaker drive. To drive speakers more dynamically, the AU-405 features a newly developed Pure Non NF circuit. This circuit design ensures that the output stage is unaffected by NF (Negative Feedback), allowing for smoother current supply for speaker drive. This significantly improves current response, enabling speakers to respond more faithfully to the music signal, resulting in smoother operation and a wider operating range. The dynamic range of the sound is expanded, dramatically improving the depth, clarity, and speed of the sound. The frequency response is DC~200kHz (±0dB, -3dB), making it an ultra-wide-range DC amplifier. It reproduces sound smoothly from low to ultra-high frequencies. A DC (direct coupling) amplifier amplifies signals directly and with high density from DC to high frequencies. Its greatest feature is that it is unaffected by the sound quality caused by capacitors in the signal path, and the low-frequency time constant can be reduced. Equipped with a Pure Non NF circuit, the AU-405 maximizes the capabilities of an ultra-wide-range DC amplifier, reproducing a wide range from sub-audible low frequencies to ultra-high frequencies of digital sources. Sansui's amplifier-making expertise has also been applied to the power supply section, which can be considered the heart of the amplifier. By employing a heavy-duty power transformer with enhanced vibration damping and heat resistance through high-density filling material, and audio-specific electrolytic capacitors with excellent charge and discharge speeds, it is possible to quickly supply power to cope with the rapidly changing dynamic range of digital sources and generate a generous 80W + 80W (60) high power. A newly developed strap-mount structure controls vibrations of the power transformer. The AU-405 employs a strap-mount system to suspend the power transformer upside down from the top of the body as a vibration countermeasure. This unique structure utilizes the weight of the transformer, which is filled with high-density material, to effectively prevent the transmission of vibrations and protect sound quality. Four modes of presence control allow you to freely adjust the optimal frequency balance. "Loudness 1 & 2" boosts both high and low frequencies simultaneously, while "Bass Boost 1 & 2" only increases the low frequencies, which are often lacking in small speakers. Selected high-grade parts enable superior sound quality that surpasses its class. Sansui have carefully selected audio components, including electrolytic capacitors and resistors, without making any compromises. Furthermore, thoroughly ensured that each component is made of non-magnetic material and has excellent vibration damping performance. Specifications: Effective output (20Hz~20kHz, both channels operating simultaneously): 80W+80W(60), 60W+60W(80) | Total Harmonic Distortion (20Hz~20kHz, effective output): 0.07% or less (80) | Intermodulation Distortion (effective output, 60Hz:7kHz=4:1, SMPTE method): 0.07% or less (80) | Frequency response: PHONO (MM) 20Hz~20kHz (± 0.5dB), CD, TUNER, DVD AUDIO/LINE, MD/TAPE-1,2-DC~200kHz (+0dB, -3dB) | S/N ratio (A network, short circuit): PHONO (MC) 70dB or higher, PHONO (MM) 88dB or higher, CD, TUNER, DVD AUDIO/LINE, MD/TAPE-1,2 110dB or higher | Tone control: BASS maximum change amount ±8dB (50Hz) TREBLE maximum change amount ±8dB (10kHz) | Subsonic filter: 16Hz (-3dB), 6dB/OCT | Rated power consumption: 160W | Dimensions: 430(W) x 136(H) x 365(D) mm | Weight: 10.5 kg

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