I have an old Peavey TNT 115 bass amp. There is no external speaker jack on it, so it can not be hooked up to another cab. I like the tone of this amp way better than my b2r, but the Peavey isnt really loud enough. I was hoping there was a way to use the Peavey as a pre amp, and my b2r as the poweramp, and plug my avatar 410 into the b2r. The Peavey and the b2r both have the power amp in pre out jacks. Is there any way to make this work?