Thanks for the insights on how the ATI/Outlaw amps work with your speakers. At some point I will pull my 2005 out of my HT cabinet and try it out with the new preamp and my speakers. And I'll do my best not to strain my back during the process! My speakers are 4 ohm nominal, efficiency is 87db and my current integrated amp has 180 watts at 4 ohms with plenty of headroom. Testing the 2005 will be about how quiet it is, soundstage and bass performance versus how loud it will go.