@kota1 BAT (Balanced Audio Technology) also has the HT Bypass function which can be selected to be used on any of the inputs. As stated above, you can select Unity Gain so the processor controls volume for all channels and the 2-channel preamp is simply a pass-through function. I have a BAT preamp as part of a very substantial 2-channel system. I also have a Marantz pre/pro and 7-channel power amp that are on a separate AC circuit from my dedicated 20-amp circuit for the 2-channel system. I only use home theater about twice per month. But when I do this system design allows me to utilize the main 2-channel power amp and my main speakers as part of the home theater total system. This design and setup has zero impact on the 2-channel system. The home theater components are completely separated from the 2-channel system, on their own circuit, and remain powered off most of the time anyway. Should you have any question I welcome a Private Message.
