Geekworm Full-HD DAC I2S Class-D TI PCM5122 Amplifier, X400 V3.0 Audio Expansion Board Sound Card | Music Player Compatible with Raspberry Pi 4 Model B/Raspberry Pi 3 Model B+ / 3 Model A+

Easy install!!Awesome sound!!!Works Great with RPI 3 B PLUSJriver Media Center 24 is the best!!!

I bought this to use with a Raspberry Pi 3B + and a Sunfounder 10.1" touchscreen display. I am using the Volumio application altered to work as a touchscreen network media player with about 230GB of music stored on the same microSD as the Raspbian OS plus access to even more music stored on a network drive. The TI 5122 DAC outputs very high-quality audio. If you use the line out jacks, this pristine audio can be pumped into a really clean amplifier driving high-end speakers with fantastic results. In my mind, the DAC on this is a 5-star item that justifies the price on its own.Then, as a bonus, there is a built-in amplifier which outputs moderately clean audio directly to speakers. This is great if space is at a premium and you need to drive some decent quality speakers. I could see this being used in a boom box build or similar for example. Unfortunately, the amplifier doesn't match the quality of the DAC. Don't get me wrong. Unless you have really good speakers and are pushing this amp slightly hard, you may not even hear the slight distortion issues. At more moderate volumes, this amp fares much better. I suggest keeping the volume below 1/3 for the best sound quality. I use the built-in amplifier to play background music while doing other tasks. For more serious listening, I would only recommend using the line outs into a better amp. The amplifier, if reviewed separately would get a 4-star rating. So, this would normally result in an overall 4.5-star rating that would be rounded to a 5 by me. However...I really wanted to round my 5 and 4-star ratings up to a 5, but there is one other problem I'm having with the amplifier. During playback, there are random dropouts of the sound. There will suddenly be about 1/2 second of silence occurring at random intervals during many hours of listening. The sound simply shuts off very briefly for no apparent reason. I've never had this happen while listening to the line outputs on an external amp. It only happens when playing through the built-in amp. This is why I dropped another half-star from my rating to arrive at 4 stars.I'd just like to make a side note that what I'd really like to see is a TI 5122 DAC board for the Raspberry Pi 3B+ which has clean line-level outputs for left and right, as well as stereo subwoofer channels. So, it would basically have a line level active crossover for subs to feed into our choice of amplifiers. I think that functionality would be more useful than a built-in amplifier. I haven't found a board like this yet, but I'm still hopeful.

What can I say, the DAC itself is fairly good. Sound nice, but doesn't include it's own clock, so it's still limited in sound quality. The problem starts with how bad the amplifier is. If you turn on the amplifier, it introduces a terrible noise onto the circuit. If you use it with headphones you can hear it, if you use the RCA out you can hear it, only way to get rid of it is to turn the amplifier off, which defeats the whole purpose of this product.When you do use the amplifier, it's unfortunately not any better. Turning it on and off causes a Pop sound from the speakers. The speakers have a buzz/hum coming from them when no sound is being played. Makes it hard to uses as a proper sound card.Build quality on this is also poor, the RCA posts are not fully mounted to the board, they are only attached via the solder pins and feels like you might rip them off every time you go to plug a cable in and out.Overall this is not a great buy, a good USB card is better as a DAC and there are a lot of better DAC options out there. Skip this one.

Excellent value. I am using this to drive some outdoor speakers, so not in the "audiophile" realm of use cases. I am powering this with a MeanWell 24V power supply (adjusted down all the way so it's putting out about 23V with no load) and it performs well. Some of the components get quite warm so I decided to affix some small heatsinks I had laying around just as a precaution. I connected it to outdoor speakers with 6.5" drivers and it gets far louder than I would ever be able to play it without getting an angry call from the neighbors. If you are wondering, as I was, the speaker outputs and the RCA outputs do work concurrently. I have an amp board connected to the RCA output to drive another pair of speakers and so far, so good. I took one star off because this does not break out any of the Pi GPIO like the Suptronics version did, so you have to get creative if you want to use any of the pins this board does not use. I think I will still buy a couple more of these because you simply can not beat the price getting a DAC and the AMP for this price.

Pros: Cranks out clear, crisp sound to speaker wire's, RCA plugs and 3.5mm headphone. Has multiple options for output and amplifier with a solid volume knob. When set up on an R Pi (3B), connected to Dayton Audio bookshelf, with proper PSU to power both hat and Pi, and running Volumio, the experience of full browser control is incredible. The sound fills my home and with Volumio the choices are limitless.Cons: added features make it $34 and the required PSU is pricey at $17 and bulky.

Great DAC! It's not hard to program. I used a 12V 3A power supply with it and it works perfectly with the Raspberry Pi 7" touchscreen display and Raspberry Pi 3 connected to it.

I have to give this a bad rating because the output is unpredictable. Power it up, maybe it will work, maybe not. Wait a day and try again. Sometimes it will output audio, then hit "stop" and hit "play" again and no sound. Tried using with Volumio, Kodi, OSMC, and Raspian with MPC/MPD. All with the same result. The site says "currently does not support Raspberry Pi 3" but sales reassured me it would work. I am using a laptop power supply which should have plenty of power to power the X400, the Pi, and official 7" touch screen display. I've finally given up on this board and ordered a different brand. I hope it works better than this one does.