Recently acquired a Tech 21 SansAmp (Deluxe)...I've never used an external pre-amp in my signal chain before like this. Anyway, this is the first time I've ever really been suggested to use the Effects Loop on my amp. I have NEVER understood the necessity to use this or why I'd want to and it's probably because I just don't understand how it works. The manual for the Tech 21 suggested to plug the output from the SansAmp into the 'Effects Return' jack on my amp versus the main input. But why? What does this do? When it do that it just makes the volume quieter versus using the regular input. It says doing this bypasses the preamps tone coloring feature and defeats the amps master volume. What? Here's my current signal chain: Active Bass ---> compressor pedal ---> Tech 21 SansAmp Bass Driver Deluxe ---> BOSS tuner pedal ---> GK 1001 head The Tech 21 has a billion different inputs and stuff to use with the Effects Loop. I just don't understand what this does or why I'd want to use it. I actually need someone to come in here and dumb it down/spell it out for me (as if i was born yesterday) on what I can use an Effects Loop for, and maybe give some advice on how to redo that signal chain if anyone knows a better way to do it? Does an active bass change the equation any? Just new to using multiple effects and stuff. Thanks so much!