Synergy SYN-2 Dual Module Tube Preamp

I really enjoy this product since it allow you to quickly swap modules, it's a bit confusing when trying to set up an FX loop of what to unplug and what to leave in, and the manual could be a bet better written in order to make hooking up and configuring properly easier. Mono/Mono bridged/stereo & with or without FX in the loop all change how you wire the back. I have both the SYN-5050 and this, and it can be overwhelming if you're worried about setting everything up before powering on. I just ended up leaving the power on and plugging and disconnecting wires until I got the results I wanted.