Harman Kardon TC-600 (c. 1990)

Almost nothing is documented about the Harman Kardon TC-600 beyond a pair of 1990 magazine advertisements. What the record shows is that this was a car audio amplifier, part of a TC Series that also included the TC-300 and TC-304 models.

The only technical details come from a full-page ad in Audio (May 1990, p.101). It promoted Harman Kardon's "Transverse Tunnel cooling" design, a fix for getting rid of heat in the cramped space of a car. The ad listed the TC-600's continuous power ratings as:

600 watts total, continuous power
200 watts × 2 channels at 4 ohms
300 watts × 2 channels at 2 ohms
600 watts × 1 channel at 4 ohms (bridged)

A simultaneous ad in HiFi-Stereo (May 1990, p.63) carried identical power figures and the same description of the cooling system. It noted that "all heat producing components are mounted" directly to the tunnel structure. No other specifications have turned up in surviving period sources - no dimensions, weight, frequency response or price. The TC-600 appears to have been a high-power, single-chassis amplifier aimed at the competitive car audio market of the early 1990s. The historical record for this model is thin.