ZK-TB21 PRO 2.1 Channel Stereo Bluetooth Amplifier ($20.87)

Tell your inner goblin it’s hoarding time: $20.87 (Banggood). Updated: 08-01-2026.

ZK-TB21 PRO 2.1 Channel 5.2 Stereo bluetooth Amplifier Board 50W+50W+100W TPA3116D2 Chip AUX Amplifier – Black
Banggood warehouse: China.

Price: $20.87

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Aliexpress

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	ZK-TB21 Bluetooth-compatible 5.0 Subwoofer Amplifier Board 50W*2+100W 2.1 Channel Power Audio Stereo Bass AMP TPA3116D2	$7.43
	ZK-TB21 BT5.0 Subwoofer Amplifier Board 50W*2+100W 2.1 Channel Power Audio Stereo Bass AMP TPA3116D2 for Home Theater Speaker	$12.41
	ZK-TB21 Bluetooth 5.0 Subwoofer Amplifier Board 50W*2+100W 2.1 Channel Power Audio Stereo Bass AMP TPA3116D2	$16.38
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	ZK-TB21 PRO 2.1 Channel 5.2 Stereo bluetooth Amplifier Board 50W+50W+100W TPA3116D2 Chip AUX Amplifier	$29.51
	AS95-TPA3116D2 Amplifier Board Module ZK-TB21 2.1 Channel Bluetooth Digital Module Bulk High/Low Tone Subwoofer Module Easy To U	$30.23
	2X DAJUNGUO ZK-TB21 PRO 2.1 Channel 5.2 Stereo Bluetooth Amplifier Board 50W+50W+100W Uses TPA3116D2 Chip AUX Amplifier-[A49T]	$50.88
	1/3/5/10/20Pcs ZK-TB21 2.1 Channel 5.0 Bluetooth Audio Amplifier Board Module 2*50W 1*100W High Bass Subwoofer Stereo	$58.47
	ZK-TB21 2.1 channel Bluetooth digital power amplifier board high and low tone subwoofer TPA3116D2 chip	$1203.53

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