If you have an Oppo (bdp-103/105) you have a negative audio delay to set up to -100ms. This makes it possible to eliminate the automatic audio delay added due to the video processing (e.g., 70ms).

/H

1: 861v8+ID41, HD621, 2xDSP8000SE, DSP7200HC SE, 4xDSP33s, 2xAC12s, Sony VW500ES 4K projector, 132" 2.35:1 screen, SMT room treatment, Oppo103D, Roku 3, Plex, Sonos(wimp lossless).
2: 861v4.8+ID40, HD621, DSP5200SL (BRG), DSP5200HCSL, DSP3100s, AC11, D2500, Roku 3: Plex, Sonos.
4: MC200(Reviver), DSP3100s, SW1600, Sonos.
5: G68, DSP3100, DSP5000C.