over 6 channel ones at the current moment? as far as movies go, there arent any true 7.1 channel formats, right? so either you are stuck using a dsp (if the reciever even has one) to try to extract 4 back/surround channels from 2 or 3 surround channels (5.1 or 6.1)or they are useless? assuming 7.1 channel formats are forthcoming, is it likely that recievers that are upgradable will get these new formats? do SACDs or DVD-A have 7.1 channel formats? will then in the near future (hence the 7.1 inputs)? are there other pieces of equipment that make use of the full 7.1 channels? if neither of the two above reasons are the answer, is it simply for two-zone use? im kind of doubting this because i would assume you would want 6.1 in one room and 2 channel in another, which would need 8 amplified channels. anyways, i just had this question and the search button and google were answering it well enough for me. if this 7 amplified channels arent necessary for me (movies and very little chance of albums i listen to being released on SACD or DVD-A) i should be able to save some money.