4jacks,
Below is a comparison between the 805 and the 875 from my manual.
Both have the features listed under Processing and the TX-SR875 Only shows additional features of the 875.
Processing
• THX
*1
Surround EX
• THX Ultra2
*1
certified
• Dolby
*2
Digital, Dolby Digital EX, Dolby Digital
Plus, Dolby TrueHD, Dolby Pro Logic IIx
• DTS
*3
, DTS-ES Discrete, DTS-ES Matrix, DTS-HD
Master Audio, DTS-HD High Resolution, DTS 96/24,
DTS Neo:6
• Neural Surround
*4
, THX-Neural
• Theater-Dimensional
*5
virtual surround sound
• DSD Direct
• 192 kHz/24-bit D/A converters
• Powerful and highly accurate 32-bit DSP processing
• Re-EQ
*6
function
• Tone control on all channels (7.1)
• 7-band EQ on 7 channels, 5-band EQ on subwoofer
TX-SR875 Only
• 140 watts minimum continuous power per channel, 8
ohm loads, 2 channels driven from 20 Hz to 20 kHz,
with a maximum total harmonic distortion of 0.05%
(FTC)
• Zone 2 composite video output
• 4 HDMI inputs, 1 output (Version 1.3a)
• Bridging capability for front speakers
• HDMI upconversion of composite video, S-Video,
and component sources (720p, 1080i, 1080p capable)
• VLSC (Vector Linear Shaping Circuitry) on all channels
You can D/L the entire manual from Onkyo.
CRT Jack