Sony STR-DA777ES

If you know what it is, you understand these are hard to come up for sale. Best attribute in my Audiophile set-up is its' passive 6 channel volume control. I also have a Sony 999ES multi-channel SACD player with digital bass management, fantastic combo!

This is Sony's Flag Ship Receiver/Surround Processor released in 2000, 120w * 5 at 80 lbs and retailed for $1500. It has Preamp I/O, Base management, 5 ch equalization,32 Bit DTS, 2 way TP-503 remote, 2.00 software upgrade from Sony. Blue Book is $950 when you can find one.

Item Description
One of "Sony's best receivers". String these three words together, and you're really saying something! The
STR-DA777ES approaches the design and performance level of high-end separates, but for a friendlier all-in-one-unit price.
For phenomenal home theater sound, you get 120 full-bandwidth-rated watts x 5 channels of Parallel Push/Pull amplification. Parallel Push/Pull design gives you four output transistors per channel -- the amps run cooler, for improved performance and longer life, and maintain tighter control over your speaker drivers.
Anti-resonant features (frame-and-beam construction, aluminum front panel, off-center insulator feet, etc.) help isolate your audio from distortion-inducing vibrations. And for heart-stopping headroom, the power supply, capacitors, and dual heat sinks are downright colossal -- this baby weighs just an ounce shy of 54 pounds!
Master your entire A/V system using its 2-way, learning, touchscreen LCD remote. Its LCD puts system status and control menus, and even CD titles from compatible Sony disc players, right in the palm of your hand! Two 32-bit processors produce Sony's exclusive Digital Cinema Sound™ modes for breathtaking acoustic realism. Dolby Digital, DTS, and Dolby Pro Logic surround processing get a dedicated 24-bit processor. A multi-room/multi-source output lets you play two stereo sources (CD, MiniDisc, radio, etc.) simultaneously in different rooms; a preamp output feeds a bookshelf system, amplifier, receiver, or powered speakers in the other room.
Key Features:
Parallel Push/Pull amplification
multi-room/multi-source stereo output
2 (32-bit) processors for Digital Cinema Sound; 1 (24-bit) for digital surround decoding (Dolby Digital, DTS)
learning and multibrand 2-way touchscreen LCD remote control
Dolby Digital/DTS inputs: 4 optical, 2 coaxial
Headphone Theater mode for virtual surround
dedicated 2-channel (stereo) mode that bypasses DSP
RS-232C port for future upgradeability
5-channel full-bandwidth power ratings
120 watts x 2 (stereo) into 8 ohms (20-20,000 Hz) at 0.02% THD -- or 120 x 5 channels (20-20,000 Hz) at 0.05% THD in Surround mode (Dolby Digital, DTS, Pro Logic)
4 audio and 5 A/V inputs (including 5 S-video, 1 A/V behind the flip-down front panel, and one 5.1-channel)
optical digital output
preamp outputs for all channels: front L/R, center, surround L/R, and (2) subwoofer
anti-resonant aluminum front panel
very large power supply, capacitors, and heat sinks
flip-down front panel
Sony Control A1-II and Control S jacks
FM sensitivity 11.2 dBf
17"W x 6-7/8"H x 18-1/4"D
Specifications:
Dolby Pro Logic Yes
Dolby Digital Yes
DTS Yes
5.1 Channel Inputs 1
Stereo RMS Power (watts) 120
THD in Stereo 0.05 %
Front Dolby Power (watts) 120 x 3
Rear Dolby Power (watts) 120 x 2
Multi-Zone Capability Yes
On-Screeen Display
Remote Control Precoded/Learning
Phono Input 1
Audio-Video Inputs 5
Front A/V Inputs S-Video
Optical Digital Inputs 4
Coaxial Digital Inputs 2
Optical Digital Outputs 1
Coaxial Digital Outputs
S-Video Inputs 5
S-Video Outputs 2
Subwoofer Outputs 2
Preamp Outputs 6
B Speaker Outputs
Audio
Surround System Class 5.1 channel .
Amplifier Output Details 120.0 Watt - 8.0 Ohm - 20 - 20000 Hz - THD 0.05 % - 1.0 channel(s) ( Rear ),
120.0 Watt - 8.0 Ohm - 20 - 20000 Hz - THD 0.05 % - 2.0 channel(s) ( Front ),
120.0 Watt - 8.0 Ohm - 20 - 20000 Hz - THD 0.05 % - 2.0 channel(s) ( Center ) .
Sound Output Mode Surround Sound .
Built-in Decoders Dolby Digital,
DTS decoder,
Dolby Pro Logic .
Surround Sound Effects Digital Cinema Sound Virtual 3D .
Digital Sound Processor (DSP) Yes .
Response Bandwidth 20 - 20000 Hz .
Total Harmonic Distortion 0.02 % .
Output Channel Qty 5.0
Output Power (Total) 600.0 Watt .
Tuner
Tuner Type Radio tuner - AM/FM - Digital .
Tuner Frequency Range AM: 530 - 1710 kHz,
FM: 87.5 - 108 MHz

audioreview.com/cat/amplification/a-v-receivers/sony/str-da777es/prd_118800_2718crx.aspx

ebay.com/rvw/Sony-STR-DA777ES-5-1-Channel-120-Watt-Receiver-/46558660/

Upgrade kit come with and is NIB.