Amazon.com: DROK® Mini Stereo AMP Audio Amplify Board Digital Portable Ampli Module 10W+10W Dual Channel Amplifier Class-D 12V DC Amplifier for PC Speaker Car Auto Motor Automotive Vehicle Motorcycle : Electronics

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Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Package Dimensions ‏ : ‎ 4.96 x 2.64 x 1.61 inches; 1.13 ounces
Item model number ‏ : ‎ 090151
Date First Available ‏ : ‎ April 1, 2013
Manufacturer ‏ : ‎ DROK
ASIN ‏ : ‎ B00C4LB57A

Customer Reviews:
83

Product Description

Parameters:
Work: D Class
Quiescent current: 20mA
Efficiency: 90%
Rated output power: 10W +10W (8Ω)
Frequency response: 20Hz to 50KHz
Operating voltage: DC 7.5-15V
Recommended power supply voltage: 12V, the center PIN of 12VDC is +
PCB board size: (40 * 40) mm
Power Interface: 5.5 socket

NOTE:
It is NOT acceptable to connect the - outputs of the L & R speakers together.

Package includes:
1x Mini Amplifier Board

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Customer reviews

3.4 out of 5

83 global ratings

How customer reviews and ratings work

Customers say

Customers like the performance, quality and compactness of the electronic component amplifier. For example, they mention it works well, is well built and takes up almost no room. That said, opinions are mixed on the sound quality and layout.

AI-generated from the text of customer reviews

10 customers mention10 positive0 negative

Customers are satisfied with the performance of the electronic component amplifier. They mention that it works well, it takes up almost no room, and it works with a camera and a speaker. Some are surprised at the output and the clean sound it produces.

"...This little amp works well and takes up almost no room. Clear, clean amplification. Very happy with it." Read more

"...of nice 2" square 8-ohm speakers I ordered and was very surprised at the output, even in open-air...." Read more

"...When set at normal amplification it plays very clean. It's much better than those horrible old LM386 amplifiers." Read more

"Very compact and worked well. I probably would select one with more gain...." Read more

7 customers mention7 positive0 negative

Customers are satisfied with the quality of the electronic component amplifier. They mention that it's well built, has a beefy potentiometer, and is a perfect buy for tinkerers.

"...The little potentiometer is really beefy to the touch, there is a lot of control with that part and I can tell they didn't cheap out with it...." Read more

"Don't let the size of these things fool you. They are legit little amplifiers...." Read more

"...Highly recommended and very well built." Read more

"Good in all senses!" Read more

6 customers mention6 positive0 negative

Customers are satisfied with the compactness of the electronic component amplifier. They mention that it works well and takes up almost no room. Some say that the amp is tiny but fun.

"This thing is tiny but fun. I had some old 100watt 2x6" bookcase speakers that I wanted to use to build a practice amp for my bass...." Read more

"...This amp is small enough to hide under the dash as well...." Read more

"Very compact and worked well. I probably would select one with more gain...." Read more

"...I'll definitely buy this again. They are smaller than an actual Triscuit! Think of the possibilities!" Read more

4 customers mention4 positive0 negative

Customers are satisfied with the power output of the electronic component amplifier. They mention that it provides a reasonable power output for such a little board, and the IC cranks out a surprising amount of power into 2 8-ohm speakers. They also say that it draws very little current.

"...They have good power output and can drive 8Ω speakers loudly, but they have very poor power supply noise rejection...." Read more

"...simple design, all powered by a tiny little IC that cranks out a surprising amount of power into 2 8-ohm speakers..." Read more

"...They draw very little current and I used a couple of the small plug in power supplies like you use to charge your phone to run them as they are..." Read more

"This provides a reasonable power output for such a little board. The connections are handy." Read more

10 customers mention6 positive4 negative

Customers are mixed about the sound quality of the electronic component amplifier. Some mention that it has a powerful sound, can drive 8 speakers loudly, and has no audible hum or hiss. However, others say that it makes an annoying constant hiss, has very poor power supply noise rejection, and is loud.

"...This little amp works well and takes up almost no room. Clear, clean amplification. Very happy with it." Read more

"...A ferrite bead does not solve the hiss. A bypass capacitor does not solve the hiss. Don't buy this product...." Read more

"...The overall quality of the amp is very good. Nice and loud, I'd easily buy it again...." Read more

"...They have good power output and can drive 8Ω speakers loudly, but they have very poor power supply noise rejection...." Read more

6 customers mention3 positive3 negative

Customers are mixed about the layout of the electronic component amplifier. Some mention that it really has the perfect layout and the power and mute header. They also appreciate the simple design, while others say that it's not perfect, has a terrible hiss, and is somewhat defective.

"...The overall quality of the amp is very good. Nice and loud, I'd easily buy it again...." Read more

"...This 12v amplifier is made of the cheapest components on the market. I see this same potentiometer on all sorts of products, and it is junk...." Read more

"This amp gets it, especially for the price. Very simple design, all powered by a tiny little IC that cranks out a surprising amount of power into 2..." Read more

"Good enough that I'd buy again, but not perfect...." Read more

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Daniel Butorovich

Well done!

Reviewed in the United States on August 17, 2015

Verified Purchase

This thing is tiny but fun. I had some old 100watt 2x6" bookcase speakers that I wanted to use to build a practice amp for my bass. I have this little amp hooked to two sets of 8 ohm 100 watt speakers with an ArtTube 12AX7 pre-amp (~$60) in front and it gets LOUD when I crank the pre-amp. Just because this is only a 10 watt output doesn't mean you can't get loud with the right setup and speakers. Give it some room to breathe with some bigger speakers and it does the job. This little amp works well and takes up almost no room. Clear, clean amplification. Very happy with it.

One person found this helpful

Helpful

A. Clark

The hiss makes this product unusable. Find a different amp.

Reviewed in the United States on June 11, 2018

Verified Purchase

Note: DROK asked me several times to leave a review, so here it is.

This 12v amplifier is made of the cheapest components on the market. I see this same potentiometer on all sorts of products, and it is junk. The screw terminals can't be turned too tightly because they'll crumble like a blueberry muffin. That big 2200uF capacitor is useless, as there is a constant DC voltage ripple. The 3.5mm jack is also made of cheap plastic and will snap easily.

But the worst thing of all about this product is the bad design. The V-in is right next to the Audio Input and Audio Output, so there is a constant hiss. The hiss is persistent and terrible, and it definitely originates from the voltage input.

I have now purchased four of these things, and they all have the hiss. A ferrite bead does not solve the hiss. A bypass capacitor does not solve the hiss. Don't buy this product.

DROK, thank you for repeatedly emailing me and asking me to review your product.

6 people found this helpful

Helpful

Amazon Customer

Love it, but very minor issues.

Reviewed in the United States on April 15, 2016

Verified Purchase

I would give five stars, but I was displeased with a few minor details. First, it's advertised that the amp can run on 5-15 volts DC, it can't. Not 9 volts at least, which granted is the only adapter I tested with. Even then, I'm going to be optimistic and blame myself for that one. The other thing I had a problem with was customer support. They had sent an e-mail to me asking if I had a problem or not (they sent 2 actually), That was actually pretty great in it of itself but after about a week and a half I have not gotten a reply. Not to worry though, I had fixed the issue myself, which was the fact that it wouldn't run on 9 volts. I ended up buying a little 12 volt DC battery pack from china (same dimensions as the amp except longer).

The overall quality of the amp is very good. Nice and loud, I'd easily buy it again. However there is minor static, but only when plugged into a wall, in a battery it's fine. The little potentiometer is really beefy to the touch, there is a lot of control with that part and I can tell they didn't cheap out with it. (EDIT: they did cheap out with it, after about 4 months of use there is a lot of distortion when changing volume, but when the volume stays constant it still sounds just as good as when I bought it. The chip is covered by the tiny aluminum heat sync. I don't think it's enough to be honest. After running a 20Hz-20,000Hz I noticed the chip was very hot. The low and high pass are obviously limited, but not audibly mind you. If it sounds like I'm bashing the product, I'm not, I think it's really high in quality, and I am above pleased with the results of it.

Thanks DROK :)

One person found this helpful

Helpful

Bill

Loud, but you get what you pay for in terms of sound quality.

Reviewed in the United States on November 21, 2015

Verified Purchase

I bought three of these, to have a small amplifier in my electronics project parts bin. They have good power output and can drive 8Ω speakers loudly, but they have very poor power supply noise rejection. Using a mediocre 9V 6A switcmode supply which has a bout 100mV of ripple on the output, I get a lot of hiss (white noise) output from the speakers. This happens whether the input is grounded or left open circuit (unconnected).

Replacing the power supply with a 9V battery reduces the his to almost nil (you can still hear some if you put your ear right next to the speakers at max volume).

This was tried on two of the three boards that I received with the exact same behavior. The third is still sealed in the original packaging.

Additionally, the mute input works fine if you short the two pins together as a switch, but I haven't been able to get it to mute using a pull-up to 5V on the mute pin (as described in the PAM8610 datasheet -- see here: http://www.diodes.com/_files/datasheets/PAM8610.pdf), referenced to the DC input ground. Not sure why yet as I haven't experimented extensively -- that may be a mea culpa. I intend to experiment with this feature some more and will edit my review if I find a workaround.

Helpful

David Klimkowski

Worked great for my project

Reviewed in the United States on June 5, 2015

Verified Purchase

This was for a small project for my car...

I am a ham radio operator and the standard onboard speaker for radio just doesn't cut it and external speakers are bulky and kinda float around the car. My project was to install 2 small speakers into the open slots in the dash. These two come over to the amp that is powered by the fuse box for power when I turn on the key. This amp is small enough to hide under the dash as well.

Works great had to adjust the volume a little so I don't get white noise all the time but I have full volume control from my radio and volume is more than enough for my needs.

Reviewed in the United States on February 21, 2016

Verified Purchase

This amp gets it, especially for the price. Very simple design, all powered by a tiny little IC that cranks out a surprising amount of power into 2 8-ohm speakers (the only configuration I have tried.) At first, I had this hooked up to a 2.5 ohm speaker (I thought it was 8-ohms but was misreading the stamp on the speaker and measured it myself) and so the amp kept cutting out at medium to high-volume. After figuring this issue out, I paired this amp with a couple of nice 2" square 8-ohm speakers I ordered and was very surprised at the output, even in open-air. Now, I want to build a wood enclosure, something about 1/4" thick, finely crafted and fitted with these speakers, and I bet it will crank. To give you an idea, it gets louder than, say, a speaker system you would buy to amplify your mp3 player (you know, the little 2"x1 or 2"x2 speaker systems) and this thing might get about as loud as a boombox/CD player from the 90's or 2000's. You could use it to amp your music for an outdoor party, build a speaker box for your bicycle (I have already done that, yes I am a huge nerd) or just anywhere you need big sound for cheap. Get a good enclosure for your speakers and ENJOY

One person found this helpful

Helpful

Top reviews from other countries

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Bobcat

Amazing little gadget..improved the music quality

Reviewed in Canada on February 18, 2019

Verified Purchase

This mini 10+10 watt amplifier is really an amazing little gadget.
I was wanting something to enhance & boost the music from my mobile to external stereo speakers with tweeters and bass boost and this little gadget did just that and it improved the music quality. I really like this gadget. Also the separation (stereo effect) is very good. Keep up the good work.
The only thing I noticed is when the music stops there is noticeable hum on the speakers ..... I guess it needs some shielding or earthing to resolve this issue.

Altecom

Cuantificación

Reviewed in Mexico on December 18, 2017

Verified Purchase

Suena adecuado al precio del aparato , ya hemos comprado 2 piezas.
Lástima que no se pueden modular graves y agudos.

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vasselle gerald

petit mais costau

Reviewed in France on November 6, 2017

Verified Purchase

tout petit ampli mais qui fonctionne bien je l'ai installé dans une école et ca fonctionne très bien pour un vidéo projecteur seul bémol il faut un transfo qui prend 4 fois plus de place que l'ampli dommage que je n'arrive pas à avoir une facture je suis artisan et j'en ai besoin pour ma compta mais vous pouvez pas me la faire même après réclamation je ne pourrais plus à l'avenir commander chez vous à cause de ca

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Renato Conotter

compatto completo arrivato prima del previsto

Reviewed in Italy on April 5, 2017

Verified Purchase

Dispositivo onesto. Compatto solo 4 x 4 cm, completo amplificatore da 10w + 10w con possibilità di collegar tasto mute e power on. Arrivato anche prima dello stimato!
Prima prova di endurance 4 ore in continuo con 2 altoparlanti da 4 ohm no segni di cedimento: non male

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Devon

terrible

Reviewed in Canada on April 9, 2021

Verified Purchase

it has so much static going through it which makes it terrible for my use which is for radio speaker amplification