I was wondering if it's possible to connect my two amps. I have a small Gorilla GG-60 practice amp that is pretty old. The jacks in the back are Preamp Output, Power Amp Input, Foot Switch, and Headphone. There is also a switch that is called Tube Stack in front. My other amp is a big Crate BX-100 that is a few months old. The jacks are Effects Loop Send, Effects Loop Return, Headphone, and Speaker. I have already tried connecting the Crate's Speaker jack to the Gorilla's Preamp and Power Amp jacks. Only the Gorilla made any noise. Can anyone help?