We play small to average size venues, and my Traynor 200 does the job fine, however the one big 1x15 has a fat but simple tone. I just picked up a Behrenger 120 Ultra. The aluminum cone is a completely different bright tone. What I am wondering is, can I use the Behrenger as an extension cab, thereby getting both a fat and bright tone? I realize I would need to keep the volume down to keep from overpowering the 120, but I never use more than 50% on the Traynor anyway. The Behrenger has a jack on the back labeled "amp in".