Top-notch CA-AS21 amplifier board! Installed it in my DIY speaker setup, and the sound output is brilliant. Works perfectly with 12-24V power, no glitches so far. Great purchase!
This ZK-AS21 amplifier module is a ripper! The sound’s top-notch, and setting it up was dead easy. Works a treat with my home speakers—couldn’t be happier!
The EGS002 driver board works well— the sine wave output is clean. The soldering points are a bit small, but with careful handling, I was able to connect everything properly.
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