Kenwood KA-9006
Documentation on the Kenwood KA-9006 is thin. It was sold in some markets under the Trio name. What survives points to a serious, upper-tier integrated amplifier. It was released at 120,000 yen in Japan, which put it firmly in the upper class of Kenwood's integrated lineup. One Estonian seller called it "the best amplifier of later Kenwood," and said many newer amplifiers from the same manufacturer were worse in sound quality.
The known specifications are sparse. It delivers 65 watts per channel into 8 ohms, with a frequency response rated from 20 Hz to 40 kHz. The equalizer stage uses a two-power-supply system alongside a three-stage direct connection with a first-stage differential circuit. A protection circuit lowers the limiter level within 100 milliseconds if the output terminals are short-circuited, which keeps the output transistors safe. Units found in Europe were configured for 230V, while Japanese-market examples ran on 100V.
People who have dealt with the KA-9006 tend to be enthusiastic. One Russian listing described the sound as "very decent." The amplifier has also appeared in a repair video on Dzen titled "Simple repair of a vintage Trio (Kenwood) KA-9006 amplifier," so it can still be serviced today. A Finnish listing from late 2024 noted the unit had been serviced that December and was in good condition.
What's missing: no production years, no dimensions or weight, no THD or signal-to-noise figures, and no detailed professional review have surfaced. The record consists largely of marketplace listings and owner commentary. Still, the consistency of the praise — and the 120,000 yen price tag — suggests this was a genuinely well-regarded component in its day.
Known facts at a glance:
- Stereo integrated amplifier, marketed as Kenwood and Trio
- 65 W/ch into 8Ω; frequency response 20 Hz–40 kHz
- Released at 120,000 yen (Japan); 230V and 100V versions seen
- Protection circuit with 100 ms limiter response
- Equalizer: two-power-supply system, three-stage direct connection, first-stage differential circuit
- Recent sale/listing prices: €420–€700; 65,000 rubles (Saint Petersburg)
If you have the service manual, measured specs, or production dates, the Archive would welcome the details.
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