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    Monoprice 2-Channel A/B Speaker Selector w/ Volume Control
    Product # 8231
    Out of Stock ETA: 10/26/2018


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    Qty: 1 $39.99
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    Browse 11 questions Browse 11 questions and 38 answers
    at higher volumes my speakers sound muffled, I am running 4 speakers total, two sets in different areas. . When I disconnect the selector box and run direct through my amp they sound fine. any suggestions. Thinking I should return unit , as I can't use as is. I have double checked all of my connections. could it be my wires?
    Kelly D on Jun 8, 2017
    BEST ANSWER: It is possible that your amp cannot push 2 sets of speakers at the same time, or, they are too far away, if so, please try using one pair only at a time, or try different wire, usually lower gauge ones, I use 14 gauge
    Could I use this to switch between 2 amplifier sources to feed to one set of speakers? Looking to connect surround speakers that I can also run as mains because the surrounds are better as a main for bed listening
    A shopper on Dec 3, 2017
    BEST ANSWER: Yes, the A/B buttons will select between the two amps. The two on/off buttons will allow you to select which speakers are on. I own two of these with the same setup you are describing, to drive speakers from a two channel or a surround sound amp.
    Do the volume controls control the source volume or the speaker zone volume? The description says source volume, but don't think that makes sense. Would make more sense for them to control the speaker zone volume. Thx!
    Gregory A D on Apr 24, 2018
    BEST ANSWER: The volume controls are actually attenuators. So the decrease the input signal rather than amplify it. The volume will only get as loud as the input. So to adjust the volume to the zone you must turn up the volume from the source device as loud as you would like it and then lower it using the volume knobs on the Speaker Selector.
    can I connect 4 speakers for one room and one amp to this unit?
    A shopper on Jan 30, 2017
    BEST ANSWER: There is only one set of inputs (1 positive and 1 negative lead) and two sets of outputs (1 positive and 1 negative lead per output). You would have to run your receiver out to your input amp, then your amp out to this switch input..then you could run the 4 speaker leads to this switch outputs. You'd have to engage both speakers on from this switch to feed all 4 speakers. The only separation you would have is left and right versus front left, front right, rear left and rear right.
    Do I need 2 amps to use this ?
    A shopper on Oct 1, 2018
    BEST ANSWER: No but if you have two music sources it allows for it. If you don't just use one connection on the inputs. THink of this more as a speaker selector/switch/volume control. It sits between amp and speakers.
    Does 100w "per channel" mean 100w on A and 100w on B? Or does it mean, for instance, 100w R side A, 100w L side A = 200W for A and vice versa for B.
    Matthew S on Apr 4, 2018
    BEST ANSWER: Your second assumption is correct, when they said 100 watts per channel, it meant the max input power is 100 watts (each side). As "stereo" means two, two outputs to two inputs (an stereo amp to two speakers). Now a days, manufacturers would say their stereo equipment can output 700 watts (not) in 7 channels, meaning adding everything up and X 2.
    What are the dimensions of this unit?
    New User U on Feb 12, 2018
    BEST ANSWER: 7.5" wide 5.0" deep 2.75" high
    Will speaker Banana plugs work on these rear clips?
    New User U on Feb 21, 2018
    BEST ANSWER: Unfortunately not. The rear connections are screw-type and will only work on bare wires. With that said, once connected, the fittings are very secure and should not come unplugged.
    Can I route "post" amp speaker wires through the #8231 unit and turn off the speakers when the unit is de-energized?
    New User U on Mar 16, 2017
    BEST ANSWER: If I understand your question, the anwer is 'yes'. This box is a simple switch, so the feed line ('post amp') gets distributed to both the A and B channels. Those channels can be turned on and off independantly. It is an un-powered box so there is no power switch on this.
    Hi, I have vintage sony str v5 which is 85 watts per channel in 8 ohms. I have two 8 ohm speakers connected to the A terminal, and I would like to attach 2 speakers to the B terminal which are 6 ohms and listen to the music with A/B on.Will this speaker selector allow me to do this safely? Jim
    A shopper on Feb 15, 2018
    BEST ANSWER: Should work fine. I'm using a 100 Watt/channel amp. with one set of mid-range speakers and tweeters. The second set is a tower with 3 speakers/tower. Best feature is ability to adjust volume on both A and B sets of speakers.
    I have a whole home speaker system with volume controls in each room. At the media closet only 2 sets of cables (4 total wires, 2 red and 2 black) come out. Battery tests move all the speakers in the system when testing each set. I have tested impedance at 1.2 for each set and numerous receivers either don't work or work for a short time then shut down. I currently have a 4 ohm receiver and would like to purchase this to connect to the speakers and input my current receiver to the system. Has anyone has a similar situation with impedance? Will this selector level the impedance between the two (receiver and speaker system) ?
    Aaron Q on Jun 19, 2017
    BEST ANSWER: I have a 200 watt tuner /amp I split 2 channels into 6 speakers they are 100 watt 4 ohm, I installed this to regulate 2 speakers in my lobby, to an inside level, 2 outside speakers which I turn up for out side use also 100 watt 4 ohm. The full 200 watt goes directly to a stand up tanning system which adjusts the level automatically for its built in speaker. The 6th wire goes to a room with a laydown tanner also full 200 watt. I purchased a single line volume control for that room. Each volume controller maintains the wattage and impedance, so I have perfect sound at the levels I need for each location. The amp, volume controllers, and speakers should be the same ohm. Because I needed 3 rooms controlled manually/independently I installed the 2 channel and a single channel I use the master volume control to adjust the volume in my stand up tanner the other three locations are controlled by the double monoprice controller and a single in wall controller also from monoprice. Perfect volume levels from minimum to maximum with no issues. GOOD LUCK, I HOPE THIS HELPS!
    Monoprice Speaker Volume Controller RMS 100W (Slide Type) - White
    Monoprice Speaker Volume Controller RMS 100W (Slide Type) - White
    4.5 / 5.0
    40 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Works as advertised at about 1/3 the cost!
    Perfect for hooking up the outside speakers to the main system, the dual volume controls allow for loud outside and quiet inside.

    PROS: Cost

    CONS: Chunky design. About standard for this type of equipment, but it reminds me of a 1980's keyboard/mouse/printer switch. Thank goodness it's not that beige color.
    February 1, 2012
    Product does what is expected. I would purchase it again.

    PROS: Does exactly what I needed the device to docontrol audio level in another room. Previously both main speakers and satellite speakers were controlled by same volume control and the levels were never right. Also there is room for expansion should I add another input.

    CONS: The amp input/speaker output connector blocks on the device for the wiring are a bit dodgy. Seems like the price wouldn't be affected much by a wiring block that would give one a better feeling of confidence. This concern is why the rating is an 8 rather than a 10.
    December 27, 2014

    PROS: Good quality, easy to set up. Solid unit.

    CONS: Maintains an 8 ohm load. If your running multiple speakers powered by an amp that can handle a 4 ohm or better, your power will be cut in half because the speaker selector box will maintain that 8 ohm load.
    June 4, 2015
    2-Channel A/B Speaker Selector w/ Volume Control
    Received my 2-Channel A/B Speaker Selector w/ Volume Control today, shipped quick, hookup is straight forward if you know what your doing, if your a newbie to hooking up speaker cables and peripherals it might take you a bit longer, make sure the polarity is wired correctly (+ to + & - to -) check their website, maybe there's a video tutorial, anyway I digress the unit is outside under my covered patio, speakers are located by the pool & under the covered patio, I temporarily hooked it up so I could give it a Q/A test run, speakers have a minimal loss of power to either zone, discovered no audio clipping between zones, seems solid, I'm hoping it makes it through an Arizona summer!
    I would've given a score of 10, but the bent volume stem drops it to an 8.

    PROS: Compact design, volume "click" positioning knobs, no power required to operate.

    CONS: None, other than a bent volume stem, and that's only a cosmetic issue.
    May 10, 2012
    Better than expected
    I bought this to add a third zone to a two zone Onkyo TX-8255 receiver, initially I dropped one of the zones and added an old pair of speakers to zone two, but I had no way of controlling the volume between the two. I had one pair at 6 ohm and one at 8 ohm, the sound just wasn't balanced. Adding this little box immediately matched the sound, I assume that there is impedance matching built in, but I am not sure. I now have two rooms powered by one zone, and the sound is great between them, I haven't even changed the volume between the two!
    November 8, 2013
    Excellent buy for the money
    I have installed five or six of these selectors without a problem. They are well made and have removable connectors for ease of hook up. Never any apparent noise on switching or in changing volume. Have driven the speakers at ample volume with miniature 20W/channel stereo amps..
    January 30, 2017
    1 year ago
    I liked it so much that I returned it and bought the 4-channel version
    Easy to install, simple user interface. I had three speaker pairs with the 2-channel version of this device, I could support all three but with a confusing tree of buttons to push to choose among them. I bought the 4-channel version instead, so now I select among the pairs with the same simple button-and-knob arrangement for each output.

    PROS: Does just what it says.
    November 19, 2014
    Speaker Selector w/ Individual Volume Controls
    A very difficult to locate analog speaker selector WITH volume controls. Monoprice always has the best of the hard to locate products at the lowest price available. Works perfectly! Thanks.

    PROS: Very fast service. Very good price with free shipping AND a $10 off code! WOW!
    August 2, 2015
    2-Channel Speaker Selctor w/volume control
    The speaker selector works as specified. Hooked to a Harman Kardon multi-zone receiver. A to main speaker and B to second zone for convenience. Easily to hook up and worked as described. Looked at Amazon for similar functionality and all would cost 3 to 4 times what I paid for this Speaker Selector at MonoPrice.

    PROS: Easy to set up
    Solidly built
    works as advertised.

    CONS: Input and Output with screws was putsy. Regula lug speaker inputs would all for quick hook up with Banana Plugs. Issue I can see with that would be movement would allow for un plugging.
    August 29, 2011
    Perfect for my situation!
    I have 2 sets of in wall speakers that we were (not easily) managing with a 5.1 receiver. Adding this to the main outs and being able to simply establish a balance with 2 knobs was awesome.

    PROS: Ease of installiton

    CONS: No ability to use pin outs, gotta use wire ends only.
    September 7, 2016