ZK-TB21 PRO 2.1 Channel 5.2 Stereo bluetooth Amplifier Board 50W+50W+100W TPA3116D2 Chip AUX Amplifier Reviews

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ZK-TB21 PRO 2.1 Channel 5.2 Stereo bluetooth Amplifier Board 50W+50W+100W TPA3116D2 Chip AUX Amplifier

US$22.59

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4.95 out of 5

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Reviews only from your country (Lao People's Democratic Republic)

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A part of the review has been auto-translated.

BG113717171VIP1
PH
05/01/2025

legit seller..._legit item..real tb21pro

legit seller... legit item..real tb21pro

legit seller..._legit item..real tb21pro
1

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Shyam_SundarVIP3
IN
23/11/2025

Only support 30w 8hm speaker and 60w 4ohm sub in 24v but mentioned 50w 4ohm speaker and 70w 4ohm sub in 21v not worked this board only in 50% to 60% efficiency not 90% only provide 120w to 140w

Only support 30w 8hm speaker and 60w 4ohm sub in 24v but mentioned 50w 4ohm speaker and 70w 4ohm sub in 21v not worked this board only in 50% to 60% efficiency not 90% only provide 120w to 140w

Only support 30w 8hm speaker and 60w 4ohm sub in 24v but mentioned 50w 4ohm speaker and 70w 4ohm sub in 21v not worked this board only in 50% to 60% efficiency not 90% only provide 120w to 140w
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