Lo-D DAD-003 (1985) | Digital Audio

 

Released in 1985, the Lo-D (Hitachi) DAD-003 was a sophisticated separate-component CD player system comprising the DAP-003 CD transport and HDA-003 digital processor (DAC). Developed as the more affordable successor to the acclaimed DAD-001, it retained many of Hitachi's advanced digital audio innovations, including a 3-beam optical pickup with Direct Pit Servo (DPS), a five-stage error correction LSI, and a high-precision linear-phase FIR digital filter with 2x oversampling for exceptionally accurate CD playback. The separate transport and DAC architecture minimized vibration, electrical interference, and power supply noise to deliver a clean, detailed sound. Premium construction, including a copper-plated chassis, vibration-damped components, and carefully selected audiophile-grade parts, further enhanced performance and reliability. Combined with comprehensive playback features such as 15-track programmable memory, multiple repeat modes, auto spacing, index search, delete and retain functions, a headphone output, and wireless remote control, the DAD-003 became one of the most advanced and cost-effective Japanese CD player systems of the mid-1980s, and the final separate CD player released under the Lo-D brand.

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Actuator employing a pure metal damping suspension system

Digital Filter

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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