ZK-AS21 TPA3255 Bluetooth 5.1 Power Amplifier Board HiFi 2.1 Channel 220Wx2+350W Digital Audio Receiver AMP Board with Treble and Bass Control for DIY Speakers

Description

🎶 Power your DIY speakers with pro-grade sound and wireless freedom!

The ZK-AS21 is a high-performance 2.1 channel Bluetooth 5.1 power amplifier board delivering 220W per stereo channel and 350W to the subwoofer. Featuring dual Texas Instruments TPA3255 Class D chips, it offers ultra-low distortion and high-definition audio. With versatile inputs (Bluetooth, AUX, USB, sound card), APP control, and advanced safety protections, it’s the ultimate upgrade for DIY speaker enthusiasts seeking powerful, customizable, and reliable sound.