Enhance your multi-zone home audio experience with the Russound D850 4-Zone/8-CH Amplifier. This powerful digital amplifier is capable of delivering 50W per channel and provides stereo L/R RCA audio inputs and 5 inputs. The amplifier also features a single output and is designed to support Russound Multi-room Music Systems.The Russound D850 is a high-quality amplifier that delivers clear and crisp sound. It comes in factory packaging (double boxed) and is barely used (only about 3 months), making it a great addition to your home audio setup. This amplifier is perfect for anyone who loves music and wants to enjoy it in every room of their home. This amplifier is in like-new condition and fully functional. Seller is a 20+ year factory direct dealer for Russound products.

About the Russound D850Came from a working system. No longer needed Powerful, cool-running multichannel power ampRussounds D850 amplifier offers versatile multi-room flexibility and plenty of power when and where you need it for top-notch sound. Enjoy clear stereo sound in four rooms, or combine two channels into one to give your speakers more juice — a great option for power-hungry outdoor speakers. And unlike traditional amps that run hot and waste a lot of energy, the D850 boasts a high-efficiency Class D amplifier design for cool operation, reduced weight, and clean, undistorted sound even at high listening volumes.More flexible options for enjoying music throughout your homeThe D850 can distribute music from one audio source, such as a networked music streamer, to multiple rooms in your home. Or you can connect up to four separate sources and play a different one in each listening room. Each of the amplifiers playback zones features independent left- and right-channel gain controls so you can adjust its output to fine-tune the levels of each speaker in your system. For music playback in more than four rooms, you can daisy-chain multiple Russound amplifiers together.Product highlights:8-channel amplifier with 4 independent playback zones50 watts per channel into 8 ohms (1,000 Hz) with all channels driven80 watts per channel into 4 ohms160 watts per channel into 8 ohms (bridged mode into 4 channels)high-efficiency, cool running Class D amplificationfrequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms)signal-to-noise ratio: greater than 90 dB4 stereo RCA audio inputs, one for each zonestereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choiceindependent trigger input/output for each zoneaudio signal sensing with auto-switching delay settings per zoneglobal trigger input/outputcascade bus input/output for daisy-chaining additional amplifiersindependent gain adjustment for each channel allows volume fine tuning and maximum volume level settings for each zoneprotection circuit provides safe and reliable operation for each amplifier output channel under extreme conditionsdetachable speaker terminals support up to 14-gauge wireremovable AC power cordrack mountable chassis (rack mount ears included)weight: 19 lbs.16-7/8W x 3-1/2H x 16-3/16DMFR # 2800-536236

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Product highlights8-channel amplifier with 4 independent playback zones 50 watts per channel into 8 ohms (1,000 Hz) with all channels driven 80 watts per channel into 4 ohms 160 watts per channel into 8 ohms (bridged mode into 4 channels) high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) signal-to-noise ratio: greater than 90 dB 4 stereo RCA audio inputs, one for each zone stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice independent trigger input/output for each zone audio signal sensing with auto-switching delay settings per zone global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers independent gain adjustment for each channel allows volume fine tuning and maximum volume level settings for each zone protection circuit provides safe and reliable operation for each amplifier output channel under extreme conditions detachable speaker terminals support up to 14-gauge wire removable AC power cord rack mountable chassis (rack mount ears included) weight: 19 lbs. 16-7/8W x 3-1/2H x 16-3/16D warranty: 3 years Whats in the box8-Channel amplifier 6 AC power cord 2 Rack-mount brackets (pre-installed) Installation Manual About this itemWritten by Crutchfields Dave BarPowerful, cool-running multichannel power amp Russounds D850 amplifier offers versatile multi-room flexibility and plenty of power when and where you need it for top-notch sound. Enjoy clear stereo sound in four rooms, or combine two channels into one to give your speakers more juice — a great option for power-hungry outdoor speakers. And unlike traditional amps that run hot and waste a lot of energy, the D850 boasts a high-efficiency Class D amplifier design for cool operation, reduced weight, and clean, undistorted sound even at high listening volumes. More flexible options for enjoying music throughout your home The D850 can distribute music from one audio source, such as a networked music streamer, to multiple rooms in your home. Or you can connect up to four separate sources and play a different one in each listening room. Each of the amplifiers playback zones features independent left- and right-channel gain controls so you can adjust its output to fine-tune the levels of each speaker in your system. For music playback in more than four rooms, you can daisy-chain multiple Russound amplifiers together.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers ATT: in Two of the pictures, example part right in the middle. -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Item History Pre-owned Details and Specs This information is to be used for reference only. Accessories or warranties mentioned in this section may not apply to this specific item. Please check the Whats Included section and photos of this listing to see everything that comes with this item. 50W x 8 at 8 ohms (80W x 8 at 4 ohms), 160W Mono bridged per zone at 8 ohms), high efficiency, cool running, global bus input, independent inputs per zone, trim level adjustment per channel, global trigger input/ output, independent trigger input/ output per zone, audio sensing per zone, auto Switching delay settings per zone, rack mountable. Funcitonal Condition Full Functionality - This item is in full working order with all features operational. Functional Condition Notes (if any): Cosmetic Condition Above Average - The item shows a less than average amount of wear for its age. Cosmetic Condition Notes (if any): Light use Whats Included Cord SKU A20542RUS

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8 Channel Digital Amplifier (4 zone power amplifier). Tested by powering on. Good visual condition.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Removed from a working environment within a university to make room for upgrades. Power cord is included. Attention shoppers: Unless otherwise stated, item has been tested for key functionality. You are expected to do your own research pertaining to compatibility and hardware/software requirements for any item interested in purchasing. This goes for any necessary configurations needed for the correct operation and system functionality. Only the pictured items are included; cables and other accessories are not included unless stated in the item description. With that being said, read the description carefully and ask questions. Terms: Please email any questions prior to bidding or buying. Please allow one business day for a reply.Business hours are Monday-Thursday 8:00AM-3:00PM EST. And Friday 8:00AM-12:00PM EST.Be sure to check your shipping address. Have suite, unit, apt . . . etc included. We are not responsible for old, incorrect, or invalid shipping addresses. This goes for items not picked up from the post office, UPS or FedEx. It is your responsibility after the item is shipped to monitor the tracking number.Any sales over $70 buyer signature will be required when the item is delivered.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Removed from a working environment within a university to make room for upgrades. Power cord is included. Attention shoppers: Unless otherwise stated, item has been tested for key functionality. You are expected to do your own research pertaining to compatibility and hardware/software requirements for any item interested in purchasing. This goes for any necessary configurations needed for the correct operation and system functionality. Only the pictured items are included; cables and other accessories are not included unless stated in the item description. With that being said, read the description carefully and ask questions. Terms: Please email any questions prior to bidding or buying. Please allow one business day for a reply.Business hours are Monday-Thursday 8:00AM-3:00PM EST. And Friday 8:00AM-12:00PM EST.Be sure to check your shipping address. Have suite, unit, apt . . . etc included. We are not responsible for old, incorrect, or invalid shipping addresses. This goes for items not picked up from the post office, UPS or FedEx. It is your responsibility after the item is shipped to monitor the tracking number.Any sales over $70 buyer signature will be required when the item is delivered.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8 Channel Digital Amplifier (4 zone power amplifier). Tested by powering on. Good visual condition. Free shipping.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions

This item is pre-owned, in functional condition. Please view the condition details described below and shown in the photos. Details and Specs This information is to be used for reference only. Accessories or warranties mentioned may not apply to this specific item. Please check the Whats Included section and photos to see everything that comes with this item. 50W x 8 at 8 ohms (80W x 8 at 4 ohms), 160W Mono bridged per zone at 8 ohms), high efficiency, cool running, global bus input, independent inputs per zone, trim level adjustment per channel, global trigger input/ output, independent trigger input/ output per zone, audio sensing per zone, auto Switching delay settings per zone, rack mountable. Whats Included Cord Functional Condition - Excellent We checked this item out for functionality and found it to be in excellent condition. When you get the item, it will have all features and functions fully operational. Cosmetic Condition - Above Average Cosmetically speaking, it looks to be in above average cosmetic shape for an item of this type with only the most minor of cosmetic wear as shown. To be more specific, here is what we noticed: Light use.

Russound D850 8-channel Digital Amplifier 50 wpc -8-channel amplifier with 4 independent playback zones -50 watts per channel into 8 ohms (1,000 Hz) with all channels driven -80 watts per channel into 4 ohms -160 watts per channel into 8 ohms (bridged mode into 4 channels) -high-efficiency, cool running Class D amplification frequency response: 20-20,00 Hz (+1.7/-1dB at 1 watt output into 8 ohms) -signal-to-noise ratio: greater than 90 dB -4 stereo RCA audio inputs, one for each zone -stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice -independent trigger input/output for each zone -audio signal sensing with auto-switching delay settings per zone -global trigger input/output cascade bus input/output for daisy-chaining additional amplifiers -independent gain adjustment for each channel allows volume fine tuning and maximum volume -level settings for each zone protection circuit provides safe and reliable operation for each -amplifier output channel under extreme conditions