B1 Opto-isolated speaker protection board Suitable for left and right independent power amplifiers and BTL power amplifiers
![B1 Opto-isolated speaker protection board Suitable for left and right independent power amplifiers and BTL power amplifiers](http://ae01.alicdn.com/kf/HTB1wqLUcYZnBKNjSZFrq6yRLFXae.jpg)
sku: 32863654843
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$8.24
Shipping from: China
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