OK! I currently own two bass heads: a Genz-Benz GBE-600 and an Ashdown MAG-600R. I own enough cabs to outfit an army. However, I'm thinking of getting a power amp that will run around 600 to 700W per channel at 4-ohms. I've also thought about getting a 1200W Bass head. Now! Here're my questions. 1. What is the advantage or disadvantage, sound wise, of running two 600W, 4-ohm cabs with": a. A 1200W bass head putting 600W into each cab; or b. A 600W/channel @ 4-ohms stereo head putting 600W into each cab. It seems that I can buy a 600W @ 4-ohms stereo amp for a lot less than the 1200W bass head. Yes, I know, the stereo amp doesn't have a preamp in it. However, I have two very good heads that do have preamps in them. 2. So, next question. Why couldn't I use the preamp out from either of the bass heads to run into the stereo head? It seems at first blush that it would work just fine. If this works, I could save myself a lot money and just supplement my existing grear with the poweramp head. 3. I've also considered running the Genz at a 2-ohm load and tapping the preamp out to run into the MAG running into a 4-ohm load. That way they would both be capable of running at 600W. I wouldn't plan on running either one that high as I don't normally run at over about 80% (7 or 8 on the output dial). I'm looking for some advice and exerience from those that really know about these things. OK TB experts! Let's hear the pros and cons of these two ideas. Thanks.!