Bypass is for integrating a HT processor. Bypass allows the HT Processor to take over volume for all 7.1 channels, though L and R continue to be routed through the 2 channel music preamp.
I'm very pleased with the sound I get with my JC 2 BP. For stereo, it takes output from an Ayer C-5xeMP or JC 3 phono stage and outputs to a pair of JC 1 amps. For multichannel, the front LR from a Bryston SP3 is passed through the JC 2 to the JC 1s.
Ayre and Pass generally thought to be a level above the parasound product which provides good value for the $. Both the ayre and pass products are excellent and if cost is an issue both make great integrated amps.
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