Two of them are right in a reasonable price range – the other definitely rests in the high-end.
Emotiva's new UPA-200 and UPA-500 run $350 and $399 respecitvely and both give you a good source of power for your audio. The 200 pumps 200 watts into two channels, and is designed to pair with a five channel amp for a 7.1 home theater. The UPA-500 is, as aforementioned, a five channel amp that gives you 120 watts of power to each channel at four ohms.
The high end amp that's newly released is the XPR-5. It gives you five channels at 400 watts per, a high-efficiency Class AB amplifier and a Class H toroidal power supply. It also packs an ARM-7 processor that monitors and controls the custom operating system that makes the whole thing work. You can pick it up at $1,999.
Source: Electronic House