Hi Amper42,
1) I wouldn't consider the Parasound JC2 BP an AVR just because it has a bypass would you? I will only be using this for 2 channel for my turntable and CD transport and my 2 Paradigm 75f's.
2) I was more concerned if my 92db sensitive speakers will pick up the hiss or not.. but I'm not sure how the S/N ratio is represented from different speaker to speaker, and if the db sensitivity is the issue.. I'm definitely appreciating some learning in this!
I have not tested the JC 2 BP. If you already own it, try it with your existing setup and see. The spec says S/N is 104dB unweighted. It's probably fine. If you don't own it but want to try it then buy it from a reseller with a great return policy.
You should understand a tiny bit of hiss is usually not a deal breaker for most people. If you have to get close to the speaker to hear it - does it really exist? The features of the amp or AVR will probably be more important than a small amount of hiss. However, when you pay over $4000 for a piece of gear you may be pickier than someone with a $1500 AVR.