Kenwood TK-140X

Little is documented about the Kenwood TK-140X beyond its appearances in period audio magazines from 1968 and 1969. It was an AM/FM solid-state stereo receiver, rated at 200 watts music power (into 4 ohms). Kenwood marketed it as an all-new design with three FETs in the front end and four integrated circuits in the signal path.

The dial is the first thing you see. Kenwood called it a "brilliant blue luminous dial" - the panel glowed when the unit was on and went opaque when it was off. It sat next to a large tuning meter and an FM stereo indicator light. A "Feather-Touch Control" handled muting, loudness (bass and treble boost at low listening levels), and tape recorder modes. High Fidelity (October 1969) called it "Kenwood's best receiver to date" after CBS Labs tests, and praised its sensitivity (1.7 µV FM sensitivity was claimed) and overall performance. Audio (March 1969, p.49) also pointed to the 200-watt output, the heavy-duty silicon transistors in the driver and main amplifier stages, and the luminous dial.

No production years, original price, or detailed service documentation appear to survive in general circulation.

Type: AM/FM solid-state stereo receiver
Power output: 200 watts music power (4 ohms)
Tuner: 3 FET front end, 4 ICs
FM sensitivity: 1.7 µV (claimed)
Special features: Luminous blue dial, Feather-Touch control for muting/loudness/tape modes, large tuning meter, stereo indicator light