Yeah, that’s a preamp. Just a preamp. Audio legend Bob Carver created the C-4000 back in 1979, when preamps were often judged by button/knob count. So what do all those controls do? There are separate bass and treble controls for left and right channels, plus all sorts of exotic, proprietary controls such as Time Delay Echo Density, Peak Unlimiter, and Correlation Threshold, some related to Carver’s Sonic Holography crosstalk cancellation technology. It also has line outputs for time-delayed left, center, and right channels. When I recently visited Carver’s test lab, I noticed he still has a C-4000 in his equipment rack.
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