Hey man, thanks for the suggestion. I took off the ground off the AC plug and whalaa, we're back in business =). I guess this is another reason for me to go ahead and build a boost regulator for the non-battery source

Hi guys, this is my first post and I hope I can get help on my project for fun =). I built a CMOY amplifier based on the schematic below with OPA2132:   http://tangentsoft.net/audio/cmoy-tutorial/misc/cmoy-tangent-sch.pdf   I did make some tweaks such as the following: - Better ground with...