AFAIK, there are only two products out there designed specifically for high-end two channel music as well as audio only, high-end 2.1 channel HT use. There may be others available, but I'm not aware of any.
The first is from Nad (sorry - I don't know the model designation) and the other is the HK-990 from Harman Kardan. Both are two channel integrated amps with digital input/internal DACs as well as full bass management/EQ/room correction. Since you mention that your speakers may change, these two models will allow 2.1 channel use for HT with the addition of a subwoofer - should you ever decide to go that way. And, IMHO, you should go that way, and the sooner the better.
I've never heard the NAD, but the HK-990 is a great sounding unit with an excellent 150 wpc Citation style (Matti Otala derived) power amp section.
BTW, the subwoofer/bass management/room correction is IMO essential for good HT. Further, if your experience is anything like mine, you'll end up using the sub/room correction for music listening, too.