I've got the Radial Bigshot EFX true bypass looper. I got it to isolate my overdrive and modulations pedals into two respective loops. The problem is that I hear a pretty big "pop" whenever I activate either of the loops. Another (more troublesome) problem is when I activate the "overdrive loop", the controls on my guitar sound ultra sensitive, noisey. For example, if I turn the volume down, the complete travel of the pot sounds scratchy/bad, even if all of the OD pedals are OFF in the loop. If I flip the rhythm/lead switch on my Jazzmaster, the pop is really amplified. I am only guessing that it is some sort of loading issue or ?????? The sensitivity issue isn't quite pronounced with the modulation loop, but the initial "pop" is still there when I de/activate the loop. The reason why I got the Bigshot was because it was way cheaper than the GigRig Quartermaster, but now I'm starting to question the purchase. Does anyone have any insight into this problem? FOR REFERENCE: in the picture, the Octava, Blues Driver and Tumnus are in Loop 2 (noisey) and the Super Octave and Deja Vibe are in Loop 1. The tuner is first in the signal path, then the Radial which outputs to rest of the pedals.