250W *2 NHB-108 1:1 direct engraving without negative feedback amplifier circuit post-stage power amplifier DIY KIT or finished

250W *2 NHB-108 1:1 direct engraving without negative feedback amplifier circuit post-stage power amplifier DIY KIT or finished
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sku: 1005004797741319
$709.05
Shipping from: China
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