OIC. The funky tone I noticed while bridging must've been room acoustics in the octagon shaped room we had played. But the info's still good to have. At yesterday's gig I ran one channel of my 2.1 wide open into my HT310 (controlling volume with the Purity as Jack suggested) and it sounded great.... nice clear tubey goodness.RAM said:What Jack told me last week was that if you DON'T bridge, you should have the master on the power amp at a minimum of 50%.