Yeah, that's the one I was talking about. I've tried DTS SS Headphone with TMT, and it's as good as Dolby's for me, but I don't know much about its implementation on integrated audio. When you have "Dolby Home Theater" you can expect a consistent feature set, and I already know how it works (for instance, applying DPLIIx independently from DH, but still being able to combine it). From the scarce info I could gather by googling about DTS's implementation, the only thing barely stated was that DTS SS headphone would upconvert stereo to surround and then virtualize it. Dolby Headphone specifically keeps those features separated, so when you have stereo sound, you have the choice of virtualizing only two speakers in front of you like a normal stereo system.