I've got a Harman Kardon stereo receiver (2-channel). which is probably an older version of this, that I'm really satisfied with:
HK 3700 | Stylish 2-channel Stereo Receiver with USB
They also have audio video receivers if you want one of those (5.1 systems and so on), though I don't have any experience with them. Overall, I've had a good experience with HK.
Audio Video Receivers | Harman Kardon