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TLDR: How does the FX Loop work relative to the other blocks? I have a looper connect to the PGO: PGO FX out -> Looper -> FX in. 1) If the FX Loop is the last element of my effect block chain, it works normally, if I put on some reverb, distortion, etc., I can record with the looper, I can hear all effects, etc., works. 2) BUT, if I move the FX Loop to the 1st block, just before the say the distortion, then it doesn't work. I'm getting totally raw guitar signal, it sounds like the FX Loop bypasses all the blocks including amp, cab, etc., so I'm not getting anything from the go with this configuration. 3) If I put it at the end just before the cab, I'm getting a loud bright harsh sound. And if I turn off the the FX loop and turn off the cab, I'm getting the exact same sound. So it's like the FX loop bypasses the cab when it's on.... So basically, from what I can gather, is that unlike all of the above pictures show, the FX loop block doesn't work like a regular block. The signal doesn't go through the block... The signal enters the block, and then seems directly routed to the output, bypassing everything that comes after it. And what is strange, is that if I record something with the looper and I turn the FX Loop off in PGO, I can still hear the looper playing the music through the monitors. So the FX Loop isn't even really turned off, it's just that the PGO is not outputting any signal from the FX Loop out, but is still processing signal from the FX Loop in. Does this make any sense? More thoughts ...