Kenwood KA-7500 (1979)

The Kenwood KA-7500 is a stereo integrated amplifier from 1979. In Japan it was sold under the Trio brand, and Kenwood was the company's export trade name. It's a big unit at 20 kg, with dual-mono construction, rated at 2×100 watts into 8 ohms, and built for Japan's 100-volt mains. It has an MM phono stage. Made in Japan.

Little else is documented about the KA-7500 beyond its power amplifier module. The amp uses the TA-100W module, which it shares with the Kenwood KA-8300 and KA-9800. That module is the part most likely to need attention today. The originals are roughly four decades old, and the aftermarket now sells replacement TA-100W+ modules for these three models. Sellers note that theirs are "NOT 40 years old or counterfeit" - which implies both age-related failures and knockoffs exist in the wild.

Owner descriptions, mostly from Russian-language listings, praise the KA-7500 for "very clean and transparent" sound and say its quality and reliability are beyond question. No formal period reviews, original pricing, frequency response figures or THD ratings have surfaced in the record.

Known specs, such as they are:

- Stereo integrated amplifier, dual-mono configuration

- 2×100 W / 8 Ohms

- MM phono stage

- 100V (Japanese domestic market)

- 20 kg

- Uses TA-100W power module (shared with KA-8300, KA-9800)

- Made in Japan, 1979

If you own a KA-7500 and have the service manual or measured performance data, the Archive would welcome the contribution.