My Panasonic SA-XR55 AV receiver is class D and has the TI chip ( digital amplification ). The major difference with amplifiers of other types ( A, B, AB, etc ) is that class D is digital while the others are analog. My class D is skinny compared to the great majority of AV receivers and light as a feather yet it makes gobs of power. I also have a JVC RX-D20 class D AV receiver and guess what they don't make these anymore either. These two fly weight receivers are nothing like the gargantuan AV receivers that are available today yet that provide equal or better performance IMO and don't require a fan as they run so cool. You can bi-amp with the Panny in two channel which is not that common with other AV receivers.

So I'll put this question another way. What became of the excellent but low priced class D AV receivers made by companies such as Panasonic and JVC?