BTW, for anyone who cares, I got the Sunfire and it is fantastic. I truly can't believe the difference over the Pio HT rcvrs internal amps. I'm sure the other amps are better in some way, but I just can't believe they would be significantly better. I'm a happy camper. Just by way of comparison, although obviously not apples-to-apples, I've heard my B&W 803's at various showrooms powered by Classe, Naim, etc, and I have older matrix 803's in my lvg rm powered by giant killer Acurus DIA100. The Sunfire holds it own musically, and may have more slam as well. Don't sell these amps short. Jeff