Kenwood KA-660D (1988–1989)
A solid-state stereo integrated amplifier with MM/MC phono input, produced by Kenwood for the late-1980s hi-fi market.
Overview
The Kenwood KA-660D is a stereo integrated amplifier manufactured by Kenwood from 1988 to 1989 in Japan. It features a built-in phono stage for both moving magnet (MM) and moving coil (MC) cartridges, making it suitable for direct turntable connection. The unit is part of Kenwood’s KA series of amplifiers and is confirmed to have a service manual in circulation, supporting long-term maintenance.
Specifications
| Product type | Stereo Integrated Amplifier; Integrated Amplifier; MM/MC Solid state integrated amplifier |
| Production years | 1988 - 1989 |
| Made in | Japan |
| Original price | approx. 598 DM (1988) |
| Power output | 60 watts per channel minimum RMS, both channels driven at 8 Ω from 20 - 20,000 Hz with no more than 0.08% Total Harmonic Distortion |
| Frequency response | 20-20,000 Hz |
| Total Harmonic Distortion | no more than 0.08% |
| Input sensitivity (Phono MC) | 0.15 mV |
| Input sensitivity (Phono MM) | 2.5 mV |
| Input sensitivity (CD/AUX/Tuner) | 150 mV |
| Input sensitivity (Tape Play) | 150 mV |
| Input impedance (Phono MC) | 100 Ohm |
| Input impedance (Phono MM) | 47 kOhm |
| Input impedance (CD/AUX/Tuner) | 47 kOhm |
| Input impedance (Tape Play) | 47 kOhm |
| Output (Tape Rec) | 150 mV/220 Ohm |
| Signal-to-Noise Ratio (Phono MC) | 76 dB |
| Signal-to-Noise Ratio (Phono MM) | 90 dB |
| Signal-to-Noise Ratio (CD/AUX/Tuner) | 100 dB |
Market
The Kenwood KA-660D has appeared in original packaging with documentation and is listed on platforms such as eBay and Hifi Shark. A service manual is confirmed to exist, aiding in restoration and repair.
eBay Listings
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