3.5mm Stereo Plug to 3.5mm Mono Jack Adaptor - Gold Plated
    Product # 7129
    3.5mm Stereo Plug to 3.5mm Mono Jack Adaptor - Gold Plated
    Product # 7129
    In Stock This item should ship tomorrow (10/25/2016) if ordered within 14 hours 17 minutes

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    3.5mm Stereo Plug to 3.5mm Mono Jack Adaptor - Gold Plated

    3.5mm Stereo Plug (male) to 3.5mm Mono Jack (female) Adaptor - Gold Plated


    6 Reviews

    51.67% of the reviewers recommend this product


    No Quality Control / Bad Design

    • Customer,
    •  Rego Park, NY 
    • 1/30/2016 3:51:36 PM

    Pros: None

    Cons: Intermittent Connections require you to hold device in your hands during entire service of operation.

    I had read the reviews and knew I was likely to have a problem so I bought two 7129's and two 7160's thinking I would get at least one part that worked without intermittent connection. No such luck. All four parts had the same problem as detailed in other people's reviews. These are sealed units so you cannot try to bend or adjust anything. It seems a flawed design to begin with. The ring connection has no spring contact so you are just hoping that it will lay across the metal hole well enough for the jack part to make contact. Well mostly it does NOT. The have no quality control and should not be sold until the design and manufacture is fixed so that they actually perform their function without requiring you to hold them in your hands to make the connection.

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    Works but not without hassle

    • Josh,
    •  Ypsilanti, MI 
    • 12/13/2015 3:59:43 PM

    Pros: Changes signal as intended

    Cons: Poor Tolerances (loose female connection)

    This items takes a mono signal from a 3.5mm male and turns it into a stereo signal (same on each channel). The female end on this adapter is very loose however. While you can Jerry rig up a solution you shouldn't have to be doing that in the first place. I was unable to find another product from another company so looks like you'll have to make due if you need this type of adapter. ( I'm using it to take a mono lav mic and changing it to a stereo signal before it goes into the recording device... Less work in post/editing)

    by Monoprice Administrator
    Hi Josh,

    Sorry to hear about the connection issues experienced with PID 7129. It sounds like you received a defective adapter, unfortunately. Would you like to try out a replacement to see if a new one will work out any better? Please let me know and I will get that started right away. I hope this helps and thank you for your feedback.

    Gabby V.
    Tech Support Associate

    by Josh
    If you believe it was an issue with my particular adapter then I'd love it if you could send one in proper working order.
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    quality issues

    • dan,
    •  toronto, ON 
    • 4/15/2013 2:59:41 PM

    Pros: price

    Cons: quality

    very cheaply built. 3.5mm mono connector doesn't make good contact inside and is loose. i've never had any good luck with audio adapters from monoprice. they seem to be all made this way. monoprice, you should consider pulling these items from your site.

    by Monoprice Administrator
    Hello Dan,

    Thank you for your review and my apologies for the issues you have experienced with PID 7129. A shame these didn't work out for your needs.. I will be sure to pass this info along to my supervisor so we can further investigate the matter. Now if you'd like, I can help setup an RMA for a return. If you would like me to proceed with the RMA, all I would need is the order # this adapter is under. Sorry again for the trouble and thanks in advance!

    Jonathan Arteaga
    Tech Support Associate

    by dan
    it's order 7973002

    i'm not going to RMA it because it's not worth the cost and the replacement would have the same defect. all these type adapters i have ever bought from monoprice, different PIDs, they are all engineered poorly. you should remove these from your stock because they make you look bad as a company for selling them. they are complete garbage. please discontinue them because they do more harm to your brand than good.

    by Monoprice Administrator
    Hello Dan,

    No worries at all, completely understandable. Oh and yes, I have made note of this. It will be brought up to our supervisors and the issue will be looked into. Sorry again for the trouble and should you have any other questions or concerns, don't hesitate to let us know!

    Jonathan Arteaga
    Tech Support Associate
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    Some problems with this device...

    • Anonymous,
    •  Binghamton, NY 
    • 4/1/2012 6:46:29 PM

    Pros: Cheap, kinda works...

    Cons: See review

    I got this, and it wasn't working at all, so I got a replacement.

    I got the new adapter, and it wasn't working either. However, I figured out what the problem is.

    This product DOES NOT work with any earbuds/headphones that have an integrated microphone/remote. These types have 4 bands on the plug, instead of 3. These appears to be an oversight on the manufacturer of the adapter, since it should be able to easily work with either 3- or 4-banded plugs.

    Also, the technician I spoke with said that the mono output would come through both channels... this is wrong it only comes through the LEFT channel.

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    Exactly what I was Looking For

    • Thomas Morales,
    •  Oceano, CA 
    • 3/25/2012 2:28:49 PM

    I have a unique application where I needed to use mono earphones with stereo cell phone headphone adatpers for audio monitoring via cell call. This is exactly what I needed... and works great. Thanks Monoprice!

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