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Russound P75

Stereo dual-source power amplifier

Item # 543P75

Maybe all you really need to power your system is a smartly automated amp like the Russound P75.

Maybe all you really need to power your system is a smartly automated amp like the Russound P75.

California customers:
Please click here for your Proposition 65 warning.

Ships free today

In stock
$139.00

About the Russound P75

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.

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.

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Product highlights:

  • 60 watts per channel into 8 ohms (1,000 Hz) at 1% THD with 2 channels driven
  • 160 watts when bridged into a single 8-ohm load
  • 75 watts into 4 ohms
  • 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: 3 years
  • Our 60-day money-back guarantee
  • MFR # 2800-536267

What's in the box:

  • 2-Channel/2-Source amplifier
  • Installation Manual

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More details on the Russound P75

Stacey B.

Product Research

Features

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.

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Customer Q&A

30 questions already asked

Q
When it plays both A and B speakers, how many watts does it deliver to each set?
[ An  Jul 20, 2020 ]
5 answers
A
I have no idea.
[ Gary  Aug 09, 2020 ]
A
It has a total of so many watts per ch. running both A&B it will divide they up
[ Montie  Aug 07, 2020 ]
A
I hit the wrong key in my first attempt to answer your question. Sorry, I'll be more careful. I use the amp as a substitute for crappy TV audio. It is wired directly to my DVR. I can now understand the dialog from TV shows much better. However, I have no way to measure power output. But I bet the manufacturer does. Have you considered asking them?
[ STUART  Aug 06, 2020 ]
A
I have no way to measure power output. I use the amp as a substitute for crappy TV speakers and I find that TV show
[ STUART  Aug 06, 2020 ]
A
Not sure but it works good
[ David  Aug 05, 2020 ]
Q
Can I use this amp with two 4 ohm speakers and two 8 ohm speakers? I have speakers in my living room and bedroom and one pair is 4 ohm and the other is 8 ohm.
[ maestroGoetz  Apr 29, 2020 ]
1 answer
A
Hello, This is what I was able to find from the manufacturer and since you are running them independently (4ohm for one set and 8ohm for the other) I believe it should work fine. The minimum recommended impedance rating for connected speakers for this amplifier is 4ohms. Most home speakers have a nominal impedance rating of 8 ohms; speakers rated at 4 ohms or lower represent more of a challenge to your amplifier.
[ Brian  Apr 29, 2020 ]
Q
How many seconds is the delay for the "auto on" function?
[ Mark  Feb 28, 2020 ]
2 answers
A
Its supposed to turn on as soon as audio is sent through the cable to it. As for the official time from when it turns on to playing audio, that I don't have and couldn't find in any documentation for it on our site or on Russound's site. I recommend giving them a call on 603-659-5170 to see if they have that information.
[ Paul  Mar 25, 2020 ]  Staff
A
I would like to answer you but I have never been able to connect and run in zone 1 and 2 to my DENON AVR-X2100W. I did not know how to connect it to my DENON.
[ emmanuel  Mar 24, 2020 ]
Q
Can you rack-mount Russound P75's in a networking equipment rack?
[ Scott  Jan 23, 2020 ]
2 answers
A
The P75 I received has no mounting brackets. I suppose brackets could be fashioned and attached with the two screws on each side of the P75. I add that my unit has worked flawlessly and is very well constructed.
[ John  Jan 23, 2020 ]
A
There is no clips for a rack. You could add a shelf to your rack for this equipment.
[ Jack  Jan 23, 2020 ]
Q
Does it connect to wi-fi?
[ Soriwori  Nov 25, 2019 ]
3 answers
A
No. I currently use mine with a Sonos:Connect device to get the Wi-Fi connection. The new Sonos Amp has similar power output but integrated connection. It's much more expensive though.
[ Jason  Nov 25, 2019 ]
A
No
[ Brian  Nov 25, 2019 ]
A
No WiFi. It has two inputs, I use a Sonos Connect which is WiFi and play Pandora via the Sonos app mostly for my music. The other input goes to a TV audio output. Then it plays to two sets of speakers on the patio/pool area. Thing of it more as an amplifier.
[ Jack  Nov 25, 2019 ]
Q
Does it connect to wi-fi?
[ Nickname  Nov 25, 2019 ]
1 answer
A
I wish I could help you, but I don't know if it connects to wi-fi.
[ david  Nov 27, 2019 ]
Q
Can I run one Bridged (8ohm) speaker from the Speaker ?A output for 160w, and also a Bridged (8ohm) speaker from the Speaker B output for 160w, and run them at the same time?
[ Christopher  Oct 24, 2019 ]
2 answers
A
I wish I could help out here. All I can tell you about the Russound is I have it connected to a Carver CT-23 Pre-amp Tuner and 2 Allison speakers and the amp is very clean and has plenty of power.
[ david  Oct 25, 2019 ]
A
Can't see why not. Think about devoted volume controls at each location. Enter
[ THOMAS  Oct 24, 2019 ]
Q
Can you connect a powered subwoofer to this amp? If so does it plug into the Line 2 output?
[ Michael  Mar 13, 2019 ]
2 answers
A
The Crutchfield tech support folks are very knowledgeable and helpful with questions like this one. Have you tried calling them?
[ STEPHANIE J  Mar 19, 2019 ]
A
Michael, my advise is to talk w one of Chrutchfields tech advisors, I use my P 75 to power my outside speakers only. Call tech advisers or my sales guy, Dexter in sales can and will help you. He knows his stuff. Wayne in Tennessee
[ WAYNE  Mar 19, 2019 ]
Q
Does this have an optical input/connection?
[ Alex  Feb 28, 2019 ]
3 answers
A
No it doesn't.
[ Adam  Mar 04, 2019 ]
A
No it does not
[ Jeffrey  Feb 28, 2019 ]
A
Yes.
[ STEVEN W  Feb 28, 2019 ]
Q
Can I use apple airplay with this amp?
[ Alex  Feb 27, 2019 ]
3 answers
A
No.
[ Michael  Mar 02, 2019 ]
A
This amplifier does not have WiFi or Bluetooth, so it does not support Apple Airplay. I have it hooked into a Denon Receiver as a preamp for a Zone 2 application, so that allows me to use Apple Airplay through the Denon receiver.
[ Daniel  Mar 02, 2019 ]
A
Not directly, it's amp only. Need a receiver.
[ jim  Mar 02, 2019 ]
Q
Can I use this to add a 2nd set of speakers to my Zone 2 on my Onkyo TX-NR626?
[ Wes  Feb 11, 2019 ]
2 answers
A
Yeah! Run a pair of stereo rca cables from the Receiver's zone 2 out to the P75 and wire up the speakers to the P75.
[ DAVID  Feb 11, 2019 ]
A
I would think it would be ideal to power a second zone. It's a great amp.
[ Robert  Feb 11, 2019 ]
Q
Can I connect a Chromecast Audio dongle as the music source?
[ GregATL  Dec 28, 2018 ]
6 answers
A
Yes with a mini headphone (F) to RCA adapter
[ pk  Jan 03, 2019 ]
A
I honestly do not know if applicable. Wish I could help.
[ Dan  Jan 02, 2019 ]
A
Yes you should be able to if it has a standard aux jack input. You will need to buy a wire with a female aux input on one end and a male red/white on other end input to go into back of the unit and then accept your aux jack.
[ Eric  Jan 02, 2019 ]
A
I tried the chrome cast to my P75 for my pool house and other speakers though out my house and yard. I had poor sound quality.
[ Jeffrey  Jan 02, 2019 ]
A
I doubt that would work, this is a very basic analog amp. Look at the pictures, see if it has a 3.5mm jack headphone jack. unit sounds great and has a good amount of power.
[ Robert  Dec 28, 2018 ]
A
Not sure I can answer it works well with our Denon and we are powering 3 other sets of speakers
[ JAMES  Dec 28, 2018 ]
Q
Will this work with an Amazon dot?
[ matthew  Jul 23, 2018 ]
1 answer
A
Nibit won't work with the dot
[ IRENE  Jul 26, 2018 ]
Q
I have a Yamaha Aventage RXA-1050. I have a 7.1.2 Atmos speaker setup but the 1050 can only drive 5.1.2. If I get this, can I have the receiver push 5.1.2, and use this amp to drive the rear surrounds to get 7.1.2?
[ Bob  Jul 08, 2018 ]
2 answers
A
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 ]
A
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 ]
Q
Can both sources A and B run at the same time?
[ Keith  Apr 06, 2018 ]
4 answers
A
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 ]
A
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 ]
A
YES
[ randolph  Apr 06, 2018 ]
A
YES THEN CAN.
[ Mark  Apr 06, 2018 ]
Q
Can i use this Amp to add four Dolby Atmos speakers to my Yamaha Rx-a1070 not for zone use, but Main Area all i need it for is just running extra speakers in th Main Area?
[ T-Hawk  Sep 17, 2017 ]
1 answer
A
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
Q
I have 7.1 receiver that does not put out much sound to the rear speakers when listening to music. Will the volume automatically increase as I raise the volume on the receiver or would I have to manually turn the volume up and down?
[ Brandon  Aug 29, 2017 ]
1 answer
A
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 ]
Q
If i want to run 4 speakers Mono, can i simply bridge the amp, then run all 4 speakers off the bridged speaker output? ie. group the speaker wire together and just connect to the mono connection?
[ lee  Jun 22, 2017 ]
2 answers
A
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
A
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 ]
Q
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 ]
3 answers
A
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 ]
A
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 ]
A
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 ]
Q
Does a monster cable connect to this amp?
[ Karlh16  Feb 20, 2016 ]
2 answers
A
Monster Cable is a brand. This amp has RCA 2 sets of rca inputs and one set of rca outputs.
[ TRENT  Feb 22, 2016 ]
A
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 ]
Q
8 ohms. If I use a switch A as bridge mode with 160 watts can I use switch B as bridge mode as well to get 160 watts? What if I connect switch B to two individual speakers, can I get 60W each along with 160W bridge mode from switch A?
[ Masahiro  Oct 24, 2015 ]
1 answer
A
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
Q
I've been looking for an Auto-Power on Power Amp to provide the extra " juice" for the Rear Speakers( 6 and 7) and the B remote speakers ( through a Russound Switch Box) connected to my Onkyo TX-NR809 Receiver. What do you all think ?
[ Gil  Sep 14, 2015 ]
2 answers
A
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 ]
A
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 ]
Q
Can I use this with a vizio soundbar?
[ Kgonzalez  Sep 11, 2015 ]
1 answer
A
I don't think so. A sound at powers its own speakers.
[ MICHAEL  Sep 13, 2015 ]
Q
Will this amp work as a subwoofer amp? Will it accept a LFE output from an audio receiver?
[ Jack  Jul 08, 2015 ]
3 answers
A
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 ]
A
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 ]
A
yes that is what I use it for.
[ Jeff  Jul 08, 2015 ]
Q
I'm a vinyl collector who has mono records, this amp has a bridge stereo and mono switch, will this serve my purpose of listening or is it used for the subwoofer?
[ anthony  Jun 05, 2015 ]
3 answers
A
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 ]
A
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 ]
A
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 ]
Q
Will this amplifier work to run 4 single (MONO) speakers in different rooms or just 2 stereo zones? The description makes it sount like the MONO selection is for a single speaker load only.
[ Daniel  Mar 08, 2015 ]
1 answer
A
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 ]
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Russound P125
Stereo dual-source power amplifier
In stock
4 reviews

$429.99 -$50.00 Price break

$379.99
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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
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