Kenwood KA-880D (1982–1984)
The Kenwood KA-880D is a serious integrated amplifier from the early 1980s. It was Kenwood's top integrated in the "D" series, a flagship line that also included the D-8 and D-9 separates. It was a 30th-anniversary model for the company, built to compete with the likes of the Marantz PM-8. It weighs 12.2 kg, and it remains quietly revered among vintage enthusiasts.
The specs show an amplifier built without much concern for cost. It delivers 90W + 90W continuous into 8Ω from 20Hz-20kHz, with a rated THD of just 0.005%. Into 4Ω it puts out 130W + 130W at 1kHz, and dynamic power at 2Ω is rated at 250W. The CD input's frequency response extends to 200kHz (-3dB). The phono stage switches between MM (2.5 mV sensitivity) and MC (100 µV) on the rear panel. The line input signal-to-noise ratio is an excellent 110 dB (IHF, A-weighted). It has a twin power supply with separate supplies for each channel, a capacitor-coupled output stage, and a damping factor of 100. Pre-out/main-in links sit on the rear, alongside two pairs of speaker terminals (A/B) and a full set of inputs: phono, CD, tuner, and two tape loops.
The front panel is busy but purposeful. It has a six-way input selector, tape monitors for both decks, a Direct (tone defeat) switch, subsonic filter, loudness, bass and treble controls, balance, and a 6.3mm headphone jack. A high filter cuts at 8kHz, and loudness compensation adds +9dB at 100Hz at -30dB volume. The original Japanese list price was ¥88,000.
Period press took notice. HiFI-Stereo (February 1988, p.121) listed the KA-880D among integrated amplifiers with a 50W continuous average output per channel. That appears to reflect an earlier or different measurement context than the 90W figure cited above, and it should be treated with some caution given the OCR quality of the source.
The forum consensus is strongly positive. Owners describe a "silky smooth" treble, a "big warm midrange," and "deep, tight bass," and one long-term owner reports 30-plus years of trouble-free service. A frequently repeated caveat is to pair it with warm speakers, not bright ones, as it can edge toward brightness with the wrong partner. It's considered a "real sleeper" that will drive almost anything.
On the collector market, clean working units typically sell in the $250-$450 range. Common age-related issues include tired electrolytic capacitors in the power supply and signal path, dirty switches and pots (the Direct switch and the MM/MC phono switch are frequent culprits), and corroded speaker terminals. No factory service manual has surfaced in research, though a user manual is available via HiFi Engine.
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