2.1 speaker

ZK-MT21 2x50W+100W 2.1 Channel Subwoofer Digital Power Amplifier Board AUX 12V 24V Audio Stereo Bluetooth 5.0 Bass Amp for Home

YS-S350H 2.1 Channel BT5.1 Amplifier Board TPA3251 220Wx2+350W HighPower Subwoofer Audio Amplifier Boards

Car Bluetooth 2.1 HiFi Bass Power AMP Digital Car Amplifier Radio Audio Amplifier USB TF Remote Cont

Subwoofer Speaker Amplifier Board 2.1 High Power HiFi Bass and Treble Control Digital Sound Power

AIYIMA A03 TPA3116 Subwoofer Bluetooth Amplifier HiFi TPA3116D2 Channel Digital Audio Amplifier 2.1 50W2+100W DC12-24V

Bluetooth Amplifier Board 2.1 Channel 50W 50W 100W Wireless Subwoofer Amp Module with Treble Bass

Desktop Notebook 2.1 Subwoofer Computer Accessory SADA D-215 for Mobile Phones Tablets

Mini USB 2.1 Wired Combination Speaker Bass Music Subwoofer for Phone Laptop PC White

Digital Amplifier Board Professional 2.1 Channel Power Amplifier Board for Speakers DC12V‑24V

DX-2.1 Large Power Audio Amplifier Board Channel High Power Subwoofer Dual Home Theater AC18V-24V

SADA V-128 Desktop Mini USB 2.1 Subwoofer Upgrade Computer Speaker Mobile Phone Notebook Small

A2DP Wireless Bluetooth 2.1 USB 3.5mm O Speaker Receiver Receptor Adapter 5V

AIYIMA A03 TPA3116 Subwoofer Bluetooth Amplifier HiFi TPA3116D2 Channel Digital Audio Amplifier 2.1 50W2+100W DC12-24V

Sony Sound Bar BRAVIA Theater Bar9 3D Speaker Cable HT-A9000 [Dolby Atmos/DTSX Compatible/360 Sound/13 Units/for TV/HDMI 2.1 included/eARC/Bluetooth

AIYIMA A01 Channel Amplifier Power Amplifier Class D with Bass and Treble Control for Home Speakers Power 2.0/2.1 100W2 RCA&AUX

Sony Sound Bar BRAVIA Theater Bar8 3D Speaker Cable HT-A8000 [Dolby Atmos/DTSX Compatible/360 Sound/11 Units/for TV/HDMI 2.1 included/eARC/Bluetooth