Axiom Home Page Forums General Discussion Home Theater Oppo BDP-83 on the way.

On the BDP-83, if you set HDMI to bitstream then the dedicated two-channel analog output (which have better DACs than the 7.1 analog outputs) will only use the L and R channels of a multichannel SACD. Setting HDMI output to LPCM will allow proper downmixing of multichannel SACD to two channels. Allowing decoding within the player will also allow you to listen to secondary audio in blu-ray discs; bitstream will not allow secondary audio. However, you may not want secondary audio as it is apparently not in a high res audio format and can potentially decrease audio quality if you allow it to be passed. You can turn off secondary audio at the disc level or player level. The FAQ and manual has good information on all of this.