I recently bought Compression, Distortion, and Preamp pedals and was working on dialing in a good sound before practice. I had a decent solo sound for a starting point to further refine once the practice started. This was our first practice in our newly built, sound proofed recording studio. When the rest of the band arrived I got an odd issue: None of my pedals would work. They all had their lights on but turning any of the knobs had no effect. Selecting between on or off had no effect. It was like they were stuck in bypass. As soon as everyone else cut off their amps the pedals seemed to return to their original function. All the amps are on a single wall, about 5 feet off the ground, on top of their respective cabinets. My rig is a DOD milkbox FX84, Boss ODB-3, and Tech 21 Sansamp VT bass going to a Peavey 450 max with a Laney 410 Directly next to my equipment is a Mesa dual rectifier on an orange 212 And directly next to that is an EVH 5150 on an orange 212, driven through an effects processor unit that was unaffected like my pedals.