Stereo dual-source power amplifier
Item # 543P75 | MFR # 2800-536267
Price break: -$70.00
$129.99 Earn up to 130 Rewards points
Offers & Financing
Ask an expert
Our VA-based experts can help.
Our take on the Russound P75 by Crutchfield's David Brown
Power for speakers and automatic source switching
Today's networked audio players, music streaming services, and remote control apps for smartphones and tablets have radically changed the way we experience music at home. You still need good clean power to drive your speakers, but you probably don't need a traditional receiver with a lot of buttons to push. Maybe all you really need is a smartly automated amp like the Russound P75.
Connect one music component as your primary source, and it will activate the amplifier when it sends out an audio signal. The amplifier returns to standby mode when the audio signal ceases. Your secondary audio source takes over automatically when there's no signal coming from the primary source. There's no need to manually switch inputs.
Say you have a network audio player, such as a Sonos Connect, connected to the primary input. Any time you fire up the Connect, your P75 turns itself on and feeds the music to your speakers. Because the P75 has two sets of speaker outputs, you could be listening in the den, the kitchen or wherever you chose to install your speakers. Because you control the Sonos Connect with a wireless controller or smartphone app, it doesn't matter where you put it. The Connect and the P75 could be out of sight in a utility closet or cabinet.
You might connect an old-school music source like a CD player to the secondary input, and enjoy it whenever you're not using your Sonos Connect. When a CD stops playing, the P75 will automatically switch to standby mode.
- 60 watts per channel into 8 ohms or 75 watts into 4 ohms
- 160 watts when bridged into a single 8-ohm load
- volume and balance controls
- A/B speaker switching
- primary and secondary audio line inputs with automatic source switching
- loop output on the secondary line input passes that audio signal on to another amp, giving you flexibility in designing a multi-room system
- 16-9/16"W x 2-3/4"H x 9-5/16"D
- 11.5 lbs.
- warranty: 1 year
- Our 60-day money-back guarantee
What's in the Box:
- 2-Channel/2-Source amplifier
- Installation Manual
Product works exactly as expected. Nothing too crazy but it certainly gets the job done.
Chris, Salt Lake City, UT
Russound P75 Reviews
Average Customer Review(s):
Thanks for submitting your review
Features and Specs
|Number of Channels||2|
|Power Output per Channel (8 ohms)||60|
|Power Output per Channel (6 ohms)||---|
|Power Output per Channel (4 ohms)||75|
|Bridged Power per Channel||160 watts|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
|Inputs & Outputs|
|Number of Inputs||2|
Dual Source Power Amplifier: The Russound P75 is a 2-channel dual source power amplifier with auto-source switching. It features two audio line inputs with a loop out to another zone, receiver, or device from Line 2 source. This amplifier can be used for power upgrades in specific zones, for speaker selector, or volume control systems.
Class A/B Design (Bridgeable): The Russound P75 is a Class A/B amplifier rated at 75 watts per channel into 4-ohms, and 60 watts into 8-ohms. With the Stereo/Bridge Mono switch in Bridge Mono position, both amplifier channels are combined for a higher powered mono output. In Bridge mode the X75 is rated at 160 watts of power into a single 8-ohm load.
Dual Source w/ Auto-Switching: The P75 has dual source capability. If two sources are used, connect the source you want to listen to most of the time to the Line 2 (secondary) input and the source you listen to less constantly to the Line 1 (primary) input Whenever the Line 1 (primary) source becomes active, that signal will take priority over the distributed audio signal on the Line 2 (secondary) input. The signal remains active but not heard on the Line 2 input, and once the Line 1 audio signal is muted or turned off , the P75 will automatically switch back to the Line 2 (secondary) audio signal.
Front-Panel & Rear-Panel Controls: On the front-panel of the P75 are Power, Speaker A/B, Volume, and Balance controls. On the rear-panel are Stereo/Bridge, and Auto On/Manual controls.
- Power On/Off +Auto On: The P75 amplifier can be turned on manually or automatically by setting a switch on the back panel. For manual power on or off , press the Power button on the front-panel. For automatic power on, set the switch to Auto On, and place the front-panel power button in the "On" position. When music is sensed on either input RCA connector, the amplifier's signal sensing sends a command for it to power on. Once the signal ends, the amplifier turns off.
- Volume & Balance Controls: You can adjust the speaker output volume, as well as adjust speaker output balance between right and left channels
- Speaker A/B Switch: You can select speaker pair A (main) or speaker pair B (auxiliary) for audio output. You can use speakers A and B together, as long as the speakers are at a minimum 8-ohm impedance.
- Stereo/Bridge (Mono) Modes: In Stereo mode the amplifier sends separate power and audio signals to the left and right channels. In Bridge (Mono) mode both the left and right channels are combined for a higher power mono output; the minimum impedance for the total load connected to a pair of channels in the bridged mode is 8-ohms.
Stereo RCA Inputs/Outputs: The Russound P75 amplifier features two stereo analog RCA inputs (Line 1/Line 2) to connect up to two analog audio devices. There is also a stereo analog RCA output to send the amplifier's Line 2 input to another zone amplifier.
Binding Post Speaker Terminals: The P75 amplifier is fitted with eight binding post speaker terminals and can accommodate up to two pair of speakers. You can power "A" speaker only, "B" speaker only, or both "A & B" speakers. When driving a single pair of speakers the amplifier can handle 4-ohm speakers in Stereo mode, or a single 8-ohm speaker in Mono mode. When driving both "A & B" speakers the amplifier can handle a minimum of 8-ohm speakers. The binding post terminals will accept bare wire (16-12AWG), pin-connectors, and banana plugs (single or dual)
Unswitched AC Outlet: The P75 amplifier has a built-in outlet on the back panel. This 120 VAC outlet provides 400W unswitched power for a device such as a small powered subwoofer. This switch provides power as long as the P75 is plugged into an outlet, whether or not the unit itself is powered on.
Protection Circuitry: The Russound P75 dual source power amplifier employs protection circuitry to safeguard against short circuits and over-heating.
- Short Circuit Protection: Special circuitry has been designed into the amplifier to safeguard under a short-circuit condition. A faulty speaker can also cause a short circuit condition. If this fault condition occurs, turn off the amplifier and check speakers for short circuit conditions when appropriate.
- Thermal Protection: The P75 amplifier is designed with special circuitry to safeguard the amplifier under a thermal overload condition. Thermal protection mode will only engage when the unit has been run at high volume for extended periods of time without adequate ventilation and/or when speaker impedances are below the minimum levels for the amplifier. In thermal protection mode the amplifier will automatically stop output. If this fault condition occurs, turn off the amplifier.
Mounting Options: The P75 amplifier can be placed on a shelf in an equipment rack, or on a table or cabinet. Make sure there is enough clearance around the amplifier for proper ventilation. The rear-panel should have approximately 5.125" of clearance, while the front-panel should have about 2.4375" of clearance. Both side of the amplifier should have around 0.9375" of clearance and the top should have 8.25" of clearance for proper ventilation.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
Why did you buy this?
Word of mouth. [ Andrew Oct 23, 2018 ]
To replace a similar unit purchased in 2013 that apparently failed. [ Robert Jun 22, 2018 ]
low price. just enough features for what I need - an amp in the shed to drive 2 out door speakers with input from an iPod in a docking station. [ David Jun 21, 2018 ]
Russound has a good reputation for reliable, long-lasting audio products that sound good. With this amp at a great sale price, it could not be passed up. [ Melanie Jun 15, 2018 ]
Great price for an amp I need to drive in-wall and ceiling speakers, leaving my Cambridge Audio CXA-80 to handle my two sets of main speakers. [ James F. May 06, 2018 ]
The best solution to add power to also use Denon AVR Home Theater receiver for speakers throughout my home. (Instead of adding another receiver.) [ Greg Apr 07, 2018 ]
Looking for a small and simple amp for my exercise room to better hear the TV. This seems like a good fit. [ KEVIN B Dec 29, 2017 ]
Zone 2 does not work. My house is wired to run three pair of speakers off of one output. There is not enough power to overcome the resistance of two floors of wire going to six different speakers from on outlet. Bought two of these to connect in series an power three sets of speakers. [ Barry Oct 08, 2017 ]
Inexpensive, purchased with a turntable and bookshelf speakers, first time home stereo purchase. [ chris Sep 25, 2017 ]
Didnt need anything fancy. [ Richard Sep 15, 2017 ]
Price and features! [ Robert Sep 14, 2017 ]
I want to run multiple outdoor speakers on zone 3. This will work perfect! [ David Sep 07, 2017 ]
Good value to power patio speakers [ Troy Aug 09, 2017 ]
Needed an amp to power two outdoor speakers. The Russound P75 looks like it will fit the bill nicely. Thanks Crutchfield. [ SCOTT Jul 23, 2017 ]
Simple, inexpensive, works. [ Alexander Jul 20, 2017 ]
Lucy's suggestion for the Yamaha musicast unit was great. But, I found a Denon that I like -- so, I'm gonna need to drive a bunch of speakers. Purchased these items here because Lucy's assistance was AWESOME! [ olu Jul 19, 2017 ]
I needed a secondary amplifier to power two sets of outdoor speakers (4 total). [ John Jul 17, 2017 ]
Advice of tech for amp needed based on my A/V unit. [ John Jul 13, 2017 ]
Friend had one [ Adam Jun 14, 2017 ]
Price and recomendation [ Mikel May 26, 2017 ]
Price and functionality [ GARTH A May 25, 2017 ]
adding two more speakers to sound system for Dolby Atmos playback, and this amplifier is perfect for this application. [ JACK Apr 30, 2017 ]
Under the recommendation of a Crutchfield Advisor [ Frederick Apr 12, 2017 ]
Jane in CS recommend based on discussion of my needs. [ Matt Apr 03, 2017 ]
I have a 5 year old MCA-C5 that recently lost a channel in one of the 6 powered zones. The pre-amp output for that zone still works and sound is fine. This appears to be the least expensive and most convenient way to restore the zone. Though I considered some other attractive options I decided to stay with Russound. [ John Jan 30, 2017 ]
Zac recommended I try this product to power the 3rd zone for my Sony STR ZA5000ES which can only power 2 zones on its own. [ Aziz Jan 24, 2017 ]
Nice external amplifier to hook up additional channels to our Rowe NGX Jukeboxes. [ Kevin Jan 14, 2017 ]
Recommended by your staff as a result of my inquiry. [ TERRY Sep 20, 2016 ]
Has features needed for a specific application. [ David Jun 21, 2016 ]
I call for some help to expand my receiver to my patio . And got the help needed thanks to Cosmo. Cosmo's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=214 [ SCOTT Jun 12, 2016 ]
Inexpensive but high quality amp for outdoor speakers [ Mark May 24, 2016 ]
Need to boost volume on outdoor speakers. [ Thomas Apr 17, 2016 ]
Hogan was great and he advised me to get this set up Hogan's bio: http://www.crutchfield.com/Support/Bio.aspx?bio=122 [ Jeff Apr 01, 2016 ]
Buck suggested it for my need will see Buck's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=140 [ Anthony Mar 29, 2016 ]
I am upgrading my surround sound system for DTS:X and Dolby Atmos and was recommended this amp for my Denon X4200W receiver to make everything work. [ Timothy Feb 21, 2016 ]
Great product. Works exactly as advertised. Easy to install and manage. [ KEN Jan 21, 2016 ]
17 questions already asked
Yes you can [ Joe Sep 24, 2018 ]
Yes [ FREDERIK C Sep 24, 2018 ]
Nibit won't work with the dot [ IRENE Jul 26, 2018 ]
I would certainly think so. I use mine the driver my 2 Bose outside speaker in my back yard and it provides plenty of sound. My neighbors enjoy it as well. I also would encourage you to get ahold of Dexter in sales. He's on top of a lot of stuff and the one that turned me onto mine. Hope this helps you. Wayne [ WAYNE Jul 12, 2018 ]
This is only an amplifier. If the pre amp only has 5 channels, this will be of no use. 1050 is a pre/amp set up and doesn't need an additional amp. In any case, this particular amp is awful. If you want an affordable 2 channel amp for the onkyo one. [ MURALI Jul 12, 2018 ]
I am using as a sub wolfer Amp so don't know for sure but russound tech very helpful. Have never waited long at all. I would think they can be does not make sense for them not to be. [ ROD Apr 07, 2018 ]
No. The unit has a relay inside that clicks back and forth between sources by sensing the signal. If the primary source has signal it will play. If the primary signal stops, and there is a secondary signal, the unit will sense the signal on the secondary input and switch to the secondary input. If both sources are running, the unit will only play the primary source. [ Michael Apr 06, 2018 ]
YES [ randolph Apr 06, 2018 ]
YES THEN CAN. [ Mark Apr 06, 2018 ]
Sorry, no. Your Yamaha supports a 5.1.2 Dolby Atmos configuration but only when the two Atmos speakers are powered by the Yamaha. [ Ryan Sep 20, 2017 ] Staff
I use these amplifiers for Speaker "B" and I have to manually change them but if you set them at one level they would be subject to the pre-amp volume. [ BRUCE A Aug 30, 2017 ]
While the amp is bridgeable, it requires a minimum 8 Ohm impedance so, no, you would not be able to connect 4 speakers in parallel to the bridged channel. If the speakers are conventional 8 Ohm, the best option is to use the amp in stereo mode and connect the pairs to the A/B speaker outputs provided. [ Ryan Jun 29, 2017 ] Staff
I only use it in the stereo mode. Works great. The manual lists doing the following for bridging. You need to select "Bridge mode" on the back. Connect Speaker wire (+) to the SPKR A Right (+) & Speaker wire (-) to the SPKR B Left (+). Keep load to 8 ohms total. [ David Jun 27, 2017 ]
3 answers I have this amp in my study connected to 2 stereo speakers (A) and a sub (B); the audio source is my desktop PC. The amp switches off when it doesn't detect any sound from the source. This would typically be ideal but extremely annoying when it happens while watching a video with a 3 or 5 sec timeframe during which there's no ongoing conversation or sound in the video. I played a movie and the amp kept switching off/on/off/on ... (you get the point). Is this typically, can the switch delay be extended, do I have a defective amp? Thanks! [ Ife Feb 10, 2017 ]
Check the auto-on switch on the back of the amp. In the auto-on position it will turn the amp off whenever there is no signal. In the auto-off position the amp is turned on and off solely by the front power switch. This should cure your problem but of course you have lost the auto feature. I know of no way to change the delay built into the auto function. I have two of these amps installed on a large yacht driving outside ceiling speakers and have had no problems in two years but we do operate in manual. Hope this helps. [ DWIGHT Feb 11, 2017 ]
The P75 amplifier can be turned on manually or automatically by setting a switch on the back panel. For manual power on or off, press the Power button on the front panel. For automatic power on, set the switch to Auto On, and place the front panel power button in the "On" position. When music is sensed on either input RCA connector, the amplifier's signal sensing sends a command for it to power on. Once the signal ends, the amplifier turns off. Recommend you set power setting on back on unit to "manual." [ Hugh Feb 11, 2017 ]
I think there might be a slider switch on the back of the amp where you can select whether the unit automatically turns on/off by detecting a signal or just leave the unit on when the power switch is on. [ MICHAEL Feb 10, 2017 ]
Monster Cable is a brand. This amp has RCA 2 sets of rca inputs and one set of rca outputs. [ TRENT Feb 22, 2016 ]
You can connect any type of cable you wish. If you have a specific Monster cable in mind that has a specific connector, take a look at the back panel picture online. [ MICHAEL Feb 21, 2016 ]
If you bridge the amp you'll get 160 watts into a single 8-ohm load. You can use an external switcher to alternate 160 watts x 1 between your A/B speakers, but you can't have the amp run in 2-channel output for your B speakers if it's bridged. [ Larry Oct 28, 2015 ] Staff
There are no speaker inputs only RCA in. You will not be able to connect rear surround (or b speaker out) unless your Onkyo has RCA out for surround. You can hook remote speakers if your Onkyo has a zen 2 RCA Out. [ Michael Sep 15, 2015 ]
It is a good amp and well priced. Just be aware that there are not separate volume controls for A and B, so you would just have to switch A and B on | off depending on what you want to listen to. Russound does make an in-wall volume controller that would allow you to separately control volumes of A and B. [ Christopher Sep 15, 2015 ]
I don't think so. A sound at powers its own speakers. [ MICHAEL Sep 13, 2015 ]
I don't think it is intended to drive the low frequencies associated with LFE, but, I haven't tried it. I would recommend looking for an amp that specifically says it is intended to amplify LFE or better yet, buy a powered subwoofer. [ MICHAEL Jul 17, 2015 ]
No, there are not any LFE inputs on this amp. I know that Crutchfield does have a Polk amp that includes this feature. [ Jason Jul 09, 2015 ]
yes that is what I use it for. [ Jeff Jul 08, 2015 ]
Hello, unfortunately i am not sure what you are asking and/or how to respond about the switch you are referring too.. :-/ sorry i couldn't be of any help.. [ Eddie Jun 08, 2015 ]
I think the switch is used to combine both A and B amps to drive a stereo speaker. Not to take a mono input and change it. You can read the users manual online at Crutchfield. [ MICHAEL Jun 08, 2015 ]
I think you would need an rca y-adapter to feed both L-R channels on the amp but it should work. It will amplify full range in mono. [ TRENT Jun 07, 2015 ]
Pre amp with a speaker selector [ ANAND Mar 30, 2015 ]
YEa it would work great that's what I did and it sounds really good [ emanuel Mar 25, 2015 ]
Hello Daniel, The mono is designed for sub woofers when more power is needed. When channels are bridged (bridging is explained in manual) it increases output. You can have more zones by using cable splitters. If your prefer mono, you can combine left and right channels (4 wires) to the same speaker. If you do choose mono, make sure to combine both red wires and both black wires before attaching to speaker post. Good luck with your system. [ Michael Mar 09, 2015 ]
Looking for more? Check out the next model in this lineup.
Get more power and speaker-level inputs
The Russound P125 offers these features:
80 watts per channel into 8 ohms
250 watts when bridged into a single 8-ohm load
selectable speaker-level input for upgrading power in an audio zone or for integrating a "local" source into a zone
Frequently Compared With
Stereo dual-source power amplifier
Stereo dual-source power amplifier
Stereo dual-source power amplifier
Stereo dual-source power amplifier