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Originally Posted by guzziguy
line level == preamp in (or preamp out as in this case).
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I'm not sure I follow guzziguy's comment because I think of line-level output to be a fixed, relatively low level to go to another component. The output of a CDP is line level unless it has some form of built-in attenuator on it. In an integrated amp situation, I would think the line-level output would allow you to take the signal out to a headphone amp, for example, which has its own volume control. The line-level output would not go through the volume control. My EMM Labs dac/preamp has two sets of outputs -- line-out and pre-out -- and the latter is volume controlled while the former is not. That is how I understand these terms.
The PS Audio manual for the C-100 further confuses me because it calls the output "line level" but then mentions it can be used to feed a subwoofer or to bi-amp into a plain power amplifier (i.e. no volume control):
"The C-100 Control amplifier has a line level output that can be used to feed another power amplifier like the Trio A-100 for bi-amping."
To me, that implies that the aux out is volume controlled. There is a guy selling a PS AUDIO GCC-100 who describes the aux out on that unit as volume controlled: "Fully balanced, 100W/ch with remote. 4 RCA, 1 XLR input.
Volume controlled aux(sub) out." Maybe that seals it.
Sorry for the long tangent here, but I was trying to figure out if the C-100 can pass along the signal or basically do double duty as a preamp, and the latter seems correct. Cool little unit.