Onkyo Integra C-701XG (circa 1989)
The Onkyo Integra C-701XG is a late-1980s CD player from Onkyo's upscale Integra line, introduced around 1989 at ¥57,000. Documentation on this model is thin. No period reviews have surfaced in the archive's research. The Japanese specification record that does exist shows a seriously engineered machine, aimed at the digital-era complaint of harsh, gritty sound.
Onkyo's approach here was aggressive isolation and separation. The C-701XG is described as an "optical transmission system" CD player. The digital signal is sent optically between internal blocks, which isolates the sensitive analog stages from digital noise. It uses a two-block construction with dedicated power supplies for the digital and analog sections. The Super Quartz System is designed to improve the accuracy of the crystal oscillator, and an 18-bit D/A converter handles the conversion. To improve accuracy further, Onkyo performed what it called "ACCU BIT" adjustment - trimming the slight error of resistance values for the upper bits on the left and right channels. The transport uses a linear slide motor, and the disc tray is a hybrid die-cast design with high damping effect. Onkyo also stated it reviewed the electronic circuit, anti-vibration measures, and element selection in developing this model.
Outputs are generous for the period: two digital (optical and coaxial) and two analog (fixed and variable). The variable analog output allows direct connection to a power amplifier without a preamp.
The measured specs are respectable. Frequency response is 2 Hz to 20 kHz ± 1 dB, harmonic distortion is 0.0025% (1 kHz), dynamic range is 100 dB, and signal-to-noise ratio is 110 dB. It measures 435 × 128 × 365 mm and weighs a substantial 8.2 kg, which reflects the separate power supplies and heavy build.
The record doesn't say how the player was received. There are no reviews, no owner impressions and no market context. The archive has found only Japanese spec-sheet sources and a couple of current-market listings. One listing on a Japan proxy-shipping site noted that the tray open/close belt had been replaced, which suggests belt replacement is a known service item on this unit. Another Yahoo Auctions Japan listing sold one as "ジャンク" (junk/as-is condition), which is common for vintage gear of this age.
The C-701XG appears to have been part of Onkyo's Integra series, which the brand positioned as its better-performing units. Its place in the lineup and its competitors aren't documented in the sources available.
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