I recently purchased a reissue Rocketreverb...the one with 2 -12's in it. It was used and did not include the original foot switch. My question is....What type of switch comes with this amp? I think it was probably a two button reverb/channel. The single switch I'm using now does not allow me to control both functions however I can do either by manipulating how deep the jack is inserted into the channel footswitch input but this is a bit inconvenient.