Onkyo T-4077 (c. 1985)
Not much is documented about the Onkyo T-4077. The most substantial trace is a September 1985 issue of High Fidelity. It announced the T-4077 as a new tuner from Onkyo with the company's APR system, expected to sell for $350 (High Fidelity, September 1985, p.20). The same roundup also listed the lower-priced T-4037 at $165.
Past that announcement, the paper trail is thin. No confirmed specifications are on record - sensitivity, distortion, dimensions, weight - and the source doesn't say what "APR" stood for. What is known is that the T-4077 was a real Onkyo tuner from the mid-1980s.
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