Reddit reviews Amplifier Board, DROK TPA3116 HiFi Dual-Channel Stereo Audio Amplifier Subwoofer DC 10-25V Digital 2.0 Amp Module 25W+25W Output with Volume Knob
We found 3 Reddit comments about Amplifier Board, DROK TPA3116 HiFi Dual-Channel Stereo Audio Amplifier Subwoofer DC 10-25V Digital 2.0 Amp Module 25W+25W Output with Volume Knob. Here are the top ones, ranked by their Reddit score.
This DROK digital amplifier is operated by wide working voltage DC 10-25V with reverse connection protection.With a volume potentiometer, you can easily turn the voice high and down.Made of high performance amplifier chip, double channel stereo amplifier, 25W+25W output power.4-8 ohm speakers are highly recommended for this DROK digital amplifier.Note: to ensure this stereo amplifier work better, please add adequate power supply (the current must be large enough).
This is really useful! I have an Echo Spot hooked up to a small amplifier https://smile.amazon.com/gp/product/B01N1UHTU1 and a pair of bookshelf speakers (sounds really good). The amplifier power supply is turned on and off by an Alexa-compatible smart plug. I bought a relay board so I could switch between the amplifier and a small computer speaker automatically but I haven't hooked it up yet. If I can switch between the amplifier and the internal speakers that would be even better.
DROK TPA3116 is pretty much my go-to amp for small projects.
I run them from laptop chargers (19v 4A or so) or 16.8v via 4s 18650 cells.
They make super cheap amplifier boards like this that would probably work perfectly. On the cheaper (read:crappier) ones, their gain is dependent on the input voltage, so using a higher voltage adapter will get you the most range.
You could get a stereo one and just run the single channel through it.