If you own this amp and you haven't tried this yet , try it, it will blow your mind. If you like pedals. if you use amp simulator pedals or any overdrive pedal plug it directly into the return on the back of the amp, the effects Loop return ,straight into that and ignore the front of the amp, your amp simulator pedal should have tone knobs most of them do lots of Drive pedals have tone knobs,plug straight into the back of the amplifier into the return, Don't Loop it just straight into the return ..you can chain, Reverb, chorus any of your modulation pedals put them at the end of the chain but straight into the back of the amp it's amazing. all of your tone knobs all of your effects knobs on your pedals greatly increase their ability to shape tone, doing this shows you exactly what your pedal is capable of. I haven't been able to stop playing since I discovered this and I'm kicking myself in the butt Because I didn't figure it out sooner .I was using the effects Loop But just as a loop for my Reverb and chorus and such. I discovered by plugging all pedals directly into the return they become your preamp. If you have an overdrive pedal, Plug your guitar into the pedal, Plug the pedal into the return.. There's your preamp, try it. You'll be amazed.