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Craig
Reviewed in the United States on February 17, 2025
I used this to nake a LED flash to the rhythm of my music and it worked perfectly
Bryan
Reviewed in the United States on February 1, 2025
The quality of the solder mask is impressive. Music sounds decent, but of course two 5W speakers is not going to turn any heads. My application is just for a raspberry pi smart Google assistant. For spoken words, the speakers and amp sound terrific.
Valeriy N.
Reviewed in the United States on January 27, 2025
This board is simple to hook up and use, takes less space than comparable products, and it's laid out in a convenient manner.
Herbert West
Reviewed in the United States on August 22, 2024
I’ve bought several of these tiny class D amps for tinkering and faffing purposes, starting with the pam8610, which also has quite a nice sound to it, but the lower power 8406 contained in this board has really made made quite an impression. I wanted something to drive really sensitive open baffle speakers, and being terminally short of cash a tube amp was out of the question. With this wee feller, my zenith cz49s come alive and fill my world with beautiful music.The documentation says that this is capable of being used as a class AB amp, but doesn’t say how. The 5v rating is good because you can plug it into a usb cube phone charger and not have to worry about a power brick. I will try it out with more demanding speakers, but for now this is superb!
Justin
Reviewed in Canada on December 30, 2024
I'm using this with a Raspberry Pi 4. It worked perfectly, and really amplified the input signal, as long as the input was strong enough.There are extra features I didn't realize it had, like switching amplifier type. I didn't use these, but I appreciate it an option.
Sophie
Reviewed in the United States on August 20, 2023
The 5w version of this amplifier is... a bit weird honestly. It only accepts 5vin but is quite power hungry, and because of how power calculations work, you need a lot of amps to keep it from dragging the 5v rail down. USB power supplies are generally not going to have this kind of grunt.Worse, when it DOES drop out, instead of just going quiet it instead screeches like a banshee for several seconds until the rail recovers. I was using this in an alarm clock project and, well, I guess it nothing else it worked well for that...Ultimately I strongly recommend grabbing the 15w big brother and feeding it a higher voltage. USB PD can easily deliver 20v with enough amps to keep that one well inside its happy zone.
Alex
Reviewed in the United States on October 3, 2023
Worked for 30 days with no issues. Tried to play music yesterday and no sound! 5v is being provided. Green light turns on but nothing. It provided good sound when it was working.
Jon H.
Reviewed in the United States on January 5, 2023
I've been ordering these amps for years - have used them in a variety of DIY projects and commissions.What i LOVE about the most recent version (v5) versus the earlier version I was using, is the addition of solder pads for power input, speaker outputs, and audio inputs!Sometimes when I'm building a project for installation, I want to know that the wires will not wiggle loose, or perhaps I'm using wires thinner than ideal for the screw terminals. These solder pads are super handy!I would love if V6 made them through-hole instead of merely surface mount, but I won't complain.Love these little amps. The sound is the best I've heard from a small, low-cost amplifier module.
turky alfaife
Reviewed in Saudi Arabia on October 18, 2022
It sounds really nice and hides the frequency generated from the supplied power really will! the output of the speaker is independent of the power source which means that neither audio source nor power source need to be grounded with the same wire. would definitely recommend it!
yvon224
Reviewed in Canada on October 30, 2021
output nust be floating not grounded
Customer
Reviewed in Canada on December 22, 2020
This audio board looked interesting because I wanted a small test speaker system that would be powered by my Raspberry Pi's 5 volt GPIO pins and, receive output through the existing headphone jack.This board looked like I could easily connect it to my Rpi B4 by cantilevering it out one end of the R pi. See photo:Used a few in stock pin connectors for power lines. Purchased some 2 inch speakers and connected them up for bench testing: See photo.Had a 12 inch audio cable in stock and used it for bench testing. I later purchased a 6 in audio cables, pkg of two straight male ends and, a pkg of two: 6 in: each having one straight male and one right angle male. I chose to use the 6 in straight and right angle ends: the other three went into stock.The right angle end of the audio cable went into the R pi and the straight went into the audio board.Note:the R pi audio alsa chip is factory set low volume: you need to enter the terminal to change it : See photos:Open the terminal: enter: sudo alsamixerthis brings up the main screen: you will see the word master under the column: use the keyboard up arrow to raise the column to 100:next press f6 and a window will open: use the keyboard down arrow:choose the headphone option a column will appear with the word headphone under it: raise the column to 100 and press exit.Check your screen speaker control slider which can be used to control the output volume to your audio board.Your new board volume control now has output control of what you set on your on your screen speaker slider. If you set your slider at 50% your small board will take that 50% as it’s 100%. Play around with it.I built a wood speaker case: sat my R pi on top: sandwiched with high density black foam
StevenInOttawa
Reviewed in Canada on March 9, 2019
Great little amp that can run on Raspberry pi projects. I made a power supply out of a USB cord for use in an Rpi. Works perfectly. Sounds great - clear and loud.
John Hinkley
Reviewed in the United States on December 8, 2018
I bought the 5W+5W version of this amplifier for use with a 32" LCD TV and a pair of unpowered 8 ohm bookshelf speakers. It is being powered by the USB port on the TV. The input is connected to the TV's headphone output. The resulting sound is much better than the TV's internal speakers. I was surprised at how loud the speakers could get with this set up. Normal viewing is with the volume at about 1/4 but even at full volume the sound isn't significantly distorted. I took away one star because there is no EMI shielding. When the amp is close to the TV you can hear a little buzzing and hiss. You'll want to keep it away from EMI sources or use a shielded project box. I rated it "easy to install" because of the standard 3.5mm stereo connector and the screw terminals for the power and speakers. Check out the companies web site.
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