Did a little digging on the site, but couldn't find the exact info I was looking for. Background: I have a Backline 210 Combo (300W @ 4ohm) and a Peavey WT410 I'm using as an extension cabinet. The Combo will eventually be sold to fund purchase of a power amp. In the meantime I'm looking to buy a rackmount preamp. Would it just be a simple matter of plugging the bass into the preamp and running the preamp into the effect loop "IN"? Anyone else done anything like this with any success? Obviously its a stop gap till I get a decent 600-800 watt bridged power amp to run the cab.