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DAMGOO

DAMGOO Mini Bluetooth Amplifier 50W+50W Dual Channel Stereo Power Output,DC 12V, Bluetooth+ AUX+ USB Input

    • Based on 241 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Nov 21
Order within 13 hours and 42 minutes
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Features

  • Introduction ZK-502M AMP is a mini Bluetooth AMP smaller than a card, its peak output power can reach 50W+50W, wide voltage input: 5-24V, you can easily buy a matching DC power supply.
  • Friendly Designthis AMP protection board is printed with connection icons, allowing you to easily connect to each port without reading the manual.
  • It Has Many Functions In A Small Size This AMP has three input methods, their input sequence is USB modeAUX modeBluetooth mode. You can directly connect to the computer through the USB interface without a driver, you can also connect to the playback device through the AUX 3.5mm interface, and finally, you can also connect to the mobile phone through the Bluetooth mode.
  • What Kind Of Speakers Are Connected To It? Active Speakers? Passive Speakers? There is no doubt that both can be connected. When you connect passive speakers, this AMP is a Bluetooth power amplifier; when you connect active speakers, this AMP is equivalent to a Bluetooth receiver. It should be noted that two types of speakers cannot be connected at the same time. You need to choose one type of speakers.
  • Tip: adequate output power is required when the audio input is sufficient and the power supply voltage/current is sufficient, the relative power will be higher. Different impedance horns will have different output power.In the case of sufficient voltage and current, the larger the impedance horn, the smaller the relative sound power, please pay attention!

Item Dimensions LxWxH: 3.23 x 1.97 x 0.71 inches


Voltage: 24 Volts


Manufacturer: DAMGOO


Brand: DAMGOO


Number of Channels: 2


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.23 x 1.97 x 0.71 inches; 3.21 Ounces


Item model number ‏ : ‎ ZK-502M


Date First Available ‏ : ‎ September 1, 2019


Manufacturer ‏ : ‎ DAMGOO


Best Sellers Rank: #32,951 in Electronics (See Top 100 in Electronics) #114 in Audio Component Amplifiers


#114 in Audio Component Amplifiers:


Customer Reviews: 4.2 4.2 out of 5 stars 241 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

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Top Amazon Reviews

    • Much more powerful than it looks; don't skip on PSU
Don't skimp on the PSU for this and upgrade the heat sink, but if you put a high gain signal into this thing it's strong enough to make a small PA speaker move air. But definitely give it a nice big clean dc24v psu, and give it a way to dissipate heat, this amp kicks, and I mean for what, ten bucks? This item is a must. ... show more
Reviewed in the United States on June 18, 2023 by J. McGill
    • One Feisty Little Dynamo!
Review Image by J. Cameron McClain J. Cameron McClain
Review Image by J. Cameron McClain J. Cameron McClain
Review Image by J. Cameron McClain J. Cameron McClain
I waited to write this review until I had a chance to test it on a pair of decent speakers -- I recently purchased some Klipsch R-41M bookshelf speakers, and have been researching amps since then. Why did I pick the DAMGOO ZK-502M? Because it's dirt cheap, I mean, come on! If it didn't work out, I would just skip buying an extra six pack of beer one week and call it even. As you'll note in the specs, you can use anything from a 5 volt to a 24 volt adapter, but the more power you give this little gem, the more it can send to the speakers. This is an important point -- if you have decent speakers, you need to get them the most power possible, so splurge on the 24 volt / 5 amp adapter. Anyway, once I assembled it (pretty simple assembly, and I've included a photo of where the heat sink attaches because that's about the only thing that folks have complained about assembly-wise), my first test was with a pair of AKG Q701 reference headphones, coupled with a Dragonfly Black DAC, into the auxiliary output. Lucky I waited to test this amp again with speakers, because the headphone output is not bad... it's terrible. I do NOT recommend this for use as a headphone amp. What probably will work -- though I can't test it -- is a set of powered speakers. The manufacturer's representative told me that the AUX OUT doesn't go through the operational amp chip, so it needs something to bump up the power. That said, my Klipschs arrived today, and I plugged them into the amp, and I'm just sitting here stunned. I may (emphasis on MAY) get a higher-quality amp in the next few months, because as I said, I bought this dinky little amp half as a joke, but this amp just told me in no uncertain terms it's not joking. Despite the fact that the whole setup is just sitting on my bed (as shown in one of the photos), as opposed to properly placed in the room, I'm in heaven. The Klipschs are known for the strong high-end, but even so, if the amp was as bad through them as the auxiliary output was through the headphones, I would be writing a very different review right now. I expected it would be like the headphone output: high- to middle- heavy, tinny, no bass, and limited volume. But no. I have the speakers cranked up less than halfway and am astonished at the range and clarity this mini monster is providing. I'm not hearing any distortion, and no buzz/hum when I pause the music. As for the Bluetooth, I disconnected the AUX IN and switched over to BT just now. I'm going to assume that the slight drop in audio quality has to do with not going through the Dragonfly DAC, but it's a marginal decrease that I could improve by messing with the EQ settings on my music player if I planned to use the Bluetooth a lot (and I don't). I can't weigh in on the long-term durability of this DAMGOO, obviously, but I was looking for a cheap power amp to drive a couple of decent speakers, and surprisingly, this amp is it. Do not be fooled by size or price. If you're looking for something dirt cheap, with zero frills and good sound for a set of speakers, there's no reason not to buy this. ... show more
Reviewed in the United States on May 22, 2021 by J. Cameron McClain J. Cameron McClain
    • A dandy little amp for the price
Review Image by Michael J White Michael J White
No, this isn't a McIntosh 1KW monoblock. However, for what it is and what it costs it's more than adequate. Assembly is straightforward (just watch the video), and the Bluetooth came right up on the first try. I'm using it with my Mac Mini, which is great computer but its internal speaker is, well, just sad. I had a pair of Technics bookshelf speakers left over from the '70s and I'm using those with this amp, stuck to the back of one of the pair. It works great, plenty of volume for my computer desk, sound quality as good as you can expect from speakers like this. I'm running the amp at its maximum volume setting and controlling it with the Mac volume slider; works well, no noticeable distortion. I'm powering it with a 12 volt 1.5 amp wall transformer and it works without issues. No, you're not going to blow out Wembley Stadium with it, but if you have reasonable expectations it's more than fine, a dandy little amp for the price. One operations note: there is no input mode switch. The inputs are, in order of priority, Aux In, Bluetooth and USB. If you plug something into the Aux input it disables Bluetooth and USB. If you unplug it Bluetooth comes up. If you plug in a USB source it is selected when both Aux and Bluetooth are disconnected. A little tricky but easy once you understand how it works. Full transparency: I bought the amp at full retail price; I'm not a compensated reviewer. ... show more
Reviewed in the United States on December 1, 2022 by Michael J White Michael J White
    • Great just as a Bluetooth receiver.
I might hook it up to speakers in the future but I wanted a stable Bluetooth receiver and it does this admirably. I'd been using a dongle which was rubbish picking up lots of RF interference. This one works perfectly with no static or hum and a great range. I used the aux output and feed it you active speakers and it's really good. Works best with a good DC adapter. One of three few times when I write a review, but doing so because it's that good. Probably would be good in a car too. ... show more
Reviewed in the United States on April 23, 2023 by Les Hall
    • Nice Bluetooth Amp
This is a very nice and powerful bluetooth amp.
Reviewed in the United States on May 21, 2023 by James E. Smith
    • Interesting little (really little) amp. Good value.
I bought this to play back from a recording machine. It's an interesting little device--about 2.1/2" square. It comes unassembled, but assembly is very easy except for where to position the heat sink (there are a choice of two chips to put it on and the heat sink is much bigger than either--it goes over the chip on the right hand side when the label is facing you. Just so you know). There is no AC adapter, but it supports a wide range of output DC voltages (5v-24v) and the power output depends on the input DC voltage. I repurposed an old DirecTV adapter at 18v which gives me an output power around 30W. I'm only driving a couple of 8ohm satellite speakers and I can make them plenty loud. You just have to match the DC pin format on the amp and somewhere in the 5-24 volt range. It supports 3.5mm stereo input jack or bluetooth (which pairs very easily). I've been running it from my iPhone with no problems. It also has a USB input which I've not tried, but I imagine it simply plays MP3 files starting from the first--I don't think there's any way to select tunes or fast-forward. It also has an AUX out (also 3.5mm) for an "active speaker" which I haven't tried. I think I could probably use for a computer rig subwoofer. Astonishing variety of controls. Really. This is not a high fidelity amp, of course, and when cranked you can hear it. But hey, the thing is tiny and it is really inexpensive. ... show more
Reviewed in the United States on February 18, 2021 by Malicorneus

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