Kenwood KA-701 (1979–1981, conflicting reports: 1979–1980 / first year 1980)
A high-speed DC integrated amplifier built in Japan with dual power supply and a reputation for clean, robust performance.
Overview
The Kenwood KA-701 is a stereo integrated amplifier made by Kenwood (Trio-Kenwood Inc.) in Komagane, Japan, during the late 1970s to early 1980s. Marketed as a "High Speed DC Integrated Amplifier," it features a DC amplifier topology for improved signal accuracy and stability. It includes two phono inputs, indicating a built-in phono stage for direct turntable connection. Owners report it as exceptionally well-built, with large capacitors and solid construction, often requiring little to no cleaning after decades of storage.
Specifications
| Power output | 85W/channel |
| Power output at 4 ohms | 100 WPC |
| Frequency response | 20Hz to 20kHz |
| Total harmonic distortion | 0.02% |
| Number of phono inputs | 2 |
| Bias current | 40mA |
| Dimensions | 440 x 153 x 407mm (conflicting reports: 17.5" x 6.5" x 16" / 17.32"W x 6.02"H x 16.02"D) |
| Weight | 13.5kg (conflicting reports: 13,5 kg / 30 lbs / 29.75 lbs) |
| Output | 200mV (line), 30mV (DIN) |
Design
The KA-701 uses a high-speed DC amplifier design with a dual power supply, contributing to its stable, low-distortion performance. The service manual specifies a 40mA bias current, and owners note the use of large capacitors, supporting its robust internal construction.
Context
It was paired with tuners like the Kenwood KT-615, forming a complete high-fidelity system.
Market
Listings show the Kenwood KA-701 selling for around $450 in tested, working condition, with some units described as one-owner and in mint cosmetic state. It is noted for needing minimal maintenance upon rediscovery.
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