I recently purchased a 50 Watt Plexi clone. I ordered the FX loop modification. When I plug a TC G-Major into the FX loop and get a bit of a gain drain. Shouldn't the FX loop just send the signal into the FX as-is without draining the signal? I have the output on the G-Major up all the way. My forst thought is to simply boost the signal coming out of the G-Major by pumping it through an Alesis Compressor with no compression set -just the gain cranked up until the signal balances against tone of the amp with no FX in the loop. Aside from a minor FX loop problem, this amp absolutely smokes. I love it. I guess what I really need to know is what do I have to do to get this FX loop to act like FX loop on other amps I own. I have a Peavey 5150 II that passes the signal perfectly with no gain drain. Are there some electronics I am missing? What is up with this? I am not an electrical engineer. What is a "buffered" FX loop? Any help appreciated.