Technics SU V7
The Technics SU-V7 is an amplifier rated at 80W per channel, in the middle of the SU series range (Audio-Collection, p.128). Most of what survives about it comes from a period review in Audio-Collection (p.128). That review placed it above the 40W SU-V3 and 60W SU-V5, and below the heavier, more expensive 120W SU-V9. The reviewer found it competitive in price and attractive to the eye, though fairly conventional in styling. The front panel is businesslike, in a semi-black finish that stood apart from the brushed silver used across much of the Technics range. Three selector switches handle input, tape, and speaker switching, and a large-diameter volume knob dominates the fascia.
The lab results in the same publication (p.129) were complimentary. The SU-V7 exceeded its rated output by a generous margin, with little difference between single-channel and both-channel operation. That suggests a large, stiff power supply. Output nearly doubled into a 4-ohm load. The 2-ohm load could not be fully driven because the current-limiting protection stepped in, but the amplifier still handled a healthy 17 amps of peak current. Measured damping factor was about 50 at 1 kHz, falling to 17 lower in the frequency range (Audio-Collection, p.129). The review listed a UK price of £199.
Beyond that review, the surviving record on the SU-V7 is thin. Even its production years aren't clearly documented in the usual sources.
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