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ZK-TB21 2.1 Bluetooth digital power amplifier module with adjustable bass and treble. Low bass speaker. TPA3116D2 original chip. ZK-MT21 Power Amplifier Board
- ZK-TB21 2.1 Bluetooth digital power amplifier module with adjustable bass and treble. Low bass speaker. TPA3116D2 original chip.
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ZK-TB21 2.1 Bluetooth digital power amplifier module with adjustable bass and treble. Low bass speaker. TPA3116D2 original chip.
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- Return for replacement within: non-replaceable
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