since these amps don't have an effects loop, how would you go about using a delay pedal or any other time based effect? do you just put them at the end of the pedal chain, after the overdrive? i heard you can somehow make an effects loop using the 4 inputs of the amp. plugging 1 side of the delay pedal into the bottom left input, and the other end into the top right. this way you can use Volume II to dial in how much delay you want. is this true?