MCM Electronics

30 Watt Stereo Amplifier PC Board with Bluetooth Receiver By MCM Custom Audio (50-16620) MCM Part #50-16620

4.5 stars 8 reviews
MSRP: $34.95
You Save: $14.96 (43 %)
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Specifications Top

15W x 2CH Digital Amplifier Board with Bluetooth
Perfect for incorporating in or onto any speaker, small enclosure or anywhere Bluetooth 4.0 connectivity is desired. Bluetooth receiver seamlessly connects with today's properly equipped devices, and onboard amplifier will easily drive up to two pairs of 8Ω speakers. Open PC board features simple screw terminal connections left/right speaker output, and a 5.5/2.1mm barrel jack for DC power input. Its small size and self contained design make this perfect for a broad range of projects, product modifications, installations and specialty applications.
  • Measures less than 1” (H) x 3” (W) x 1-1/2” (D)
  • Highly efficient Class D amplifier
  • Screw terminal power input and speaker output connections
  • Screw terminals accept up to 16 AWG wire
  • Power requirements: 12VDC/2A, power supply Model 28-19375 recommended, sold separately

Part Numbers
MCM Part #:50-16620
MCM Custom Audio Part #:50-16620
Package Specifications & Dimensions
Weight:0.05 lbs.
RoHS Comp:No
Warranty:90 days
Need to Return?
Length:3.5 in.
Width:2 in.
Height:1 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

Product Reviews Top

  • by mytimac

    on 2/17/2017

    OK, not great

    Overall: 3.5 out of 5

    I bought one for me and gifted one to my brother about a 6 months apart.
    Not bad for price, though adding a power supply does suck when you start to add things up. Was easy to setup, volume is good. If you look at Documents on this product page you will see this was intended for 8 Ohm ceiling speaker install originally. That is why it is shaped odd.
    The gifted one to my brother had the left channel fail after about 8 months.
    Mine has static in it when it plays audio, not horrible. I don't really notice unless right next to speakers. When no audio playing you don't hear it. Tried from computer and phone with same results. But I am also using old 4ohm bookshelf speakers. Not sure if that has anything to do with it. This might be a mistake in the long run to use 4 Ohm so not really counting this against the device.
    I designed and 3D printed a case for mine. I will make the design available on Thingiverse in the near future. Just search for MCM 50-16620.

  • by accuohio

    on 12/8/2016

    I love this thing

    Overall: 3.5 out of 5

    Purchased on a whim when they were on sale, via flyer, for substantially less than the normal $20 price. I agree that at almost $20 it is overpriced. Wasn't sure what I was going to do with this, but now I have ideas for 3-4 more. I ended up using this one in the garage with my patio speakers which I brought in for the winter. Awesommmmmme. More than loud and clear enough. When the weather warms, I'll use one of these out on the patio as my prior BT amp/ receiver that WAS driving the speakers had issues with reception. This thing receives awesomely, connects flawlessly, and I just leave it "on"/ plugged-in when not in use. Mine is the non-barrel power input, which isn't a huge deal, but the barrel style would be much preferred. For the $20 price, they should include the power source, maybe.

  • by Davemaddon

    on 4/3/2016

    Its quite impressive for what it is...

    Overall: 3 out of 5

    For its intended purpose, the 30 watt stereo amplifier PC board Bluetooth receiver (50-16620) delivers a very clean and responsive output. I had an old monitor speaker left from a pair that had one blown woofer. The good one was perfect for this PC board. I installed it inside on the back of the speaker cabinet and wired it for mono output. I had a DC power connector so I just drilled a small hole for the power cable plug, added a fuse between the positive side of the power plug and the positive input of the PC board, utilizing the supplied wiring block. Drilled another small hole to see the status LED. I do recommend adding a 25v 1000uF electrolytic capacitor on the power input. This will keep the PC board from starving for power at high volumes and low frequency spikes.(I actually used a 25v 3300uf, which is what I had on hand).

    I applied power from the recommended power supply, synced with my iPad, entered the code and it instantly connected. I have had this running at high volume (3/4) for well over 24 hours straight with no issues worth mentioning.

    All in all, the quality is not too bad. It would be great if MCM could add an auxiliary input with volume control, longer antenna, and options to have the status LED where it can be relocated to be seen. All is good for its intended purpose. I remember seeing it for $14.99 not long ago which was a great price for it. $19.99 is a bit on the expensive side without a power supply.

    I give it three stars for value because it is priced a little above what I think it should ($15 is a fair price). By time you add all the other necessities for the project, it runs the cost up there.

    I give it a three stars for features because it has none other than Bluetooth. Quality is great (should have another category for that, I would have given 5 stars).

    Over all it is a decent product if you like to tinker with sound.Just be sure to use basic safety precautions by adding a properly sized fuse to the project. Well done MCM.

  • by KARLTON

    on 9/11/2015

    Class Listen Up

    Overall: 5 out of 5

    Great little amp plug scan find enter code done, please note password on box unit came on.using. on jvc 2 way min 10 Watts@4 ohms sounds great, also purchased AC adapter with my amp had to cut wire no problem for me. powered on playing sounds great.cons none for price. Hey don't tell anyone there's no such thing as a cellphone their our lives©KARLTON. Thanks

  • by kraft1191

    on 4/30/2015

    More than I expectex!

    Overall: 5 out of 5

    I have been rebuilding an old jukebox. Just for grins I connected it to the speaker leads inside the unit. It paired quickly and sounds as good as the old 300watt unit that it replaced. Since the jukebox will be used in a rec-room, the volume and Bass are perfectly adequate.
    I'm absolutely amazed 15watts/channel sounds this good.

  • by mattsco

    on 4/11/2015

    Bluethooth 30 watt cool!

    Overall: 5 out of 5

    This real easy to hookup,sounds great,just as discribed,I plan on installing it into a box.

  • by Henry Devereux

    on 2/11/2015

    Works well and sounds terrific!

    Overall: 4.5 out of 5

    Like the previous reviewer, mine arrived with a barrel-style DC power jack soldered onto the board instead of the screw terminal power input as listed in the product description...the barrel-style jack is much more convenient in my opinion. Setup is as easy as just connecting a pair of speakers, plugging in a 12VDC/2A, power supply (I bought the suggested Model 28-19375), and syncing with my device via Bluetooth. My phone found the board right away and all I had to do was enter the bluetooth password listed on the box and I was ready to enjoy my tunes!

    As far as sound quality is concerned, this impressive little board sounds terrific and has plenty of room-filling power. I was pleasantly surprised! The only complaints I would have are, I wish that the speaker connectors were spring-type instead of the scew-in type and the Bluetooth range apoears to be somewhat limited (about 8-10 feet with no obstructions). I suspect I could add an extension to the Bluetooth antenna to increase the range though.

    Bottom line is, it's an outstanding value and it sounds great! I'm ordering a second one.

  • by biglabrat

    on 1/29/2015

    Awesome buy.

    Overall: 5 out of 5

    I was looking for an amp to spice up my media center project. This unit solves 2 problems at once. The board that I received had a DC power jack soldered in place of the screw terminals, allowing me to plug a DC power source in directly. Out of the box, I connected my speakers, then power, finally turned on my Bluetooth device and I was jamming. At 15W per channel, there is plenty of power to drive my speakers. The Bluetooth range is adequate for my needs. At almost half the original price, I'm tempted to order another.