When I get some time I'll give OOYH another install and get it working. I was obviously making a big mistake trying to use a Harman Target curve with any HRTF. Flat is what's needed - you can use AutoEQ to compute a flat EQ for your headphones from various measurement sources - I found the sound bang on after that. No need to tweak EQ. What I was obviously doing before was using a curve that had a built in boost in the treble range, then EQing the treble down to make it sound right. Darrin - might be worth suggesting that or building an EQ to apply the flat target in your software? phoenixdogfan - I agree completely - Impulcifier's author has virtual room correction forthcoming. In principle a virtual room should blow away a real room.