Fosi Audio Bluetooth 5.0 2.1 Channel Power Amplifier + Bass Treble Control BT30D

Model: BT30D. 1x BT30D Amplifier. Speakers full frequency output, By using custom treble bass knob and adjustable 40-300Hz cutoff frequency for

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Fosi Audio BT30D PRO 165Wx2 2.1 CH Bluetooth 5.0 Power Amp

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Fosi Audio BT30D Bluetooth Sound Power Amplifier 2.1 Channel Bass & Treble Control Amp Audio Subwoofer 100W + 50W x2 - AliExpress

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Fosi Audio BT30D Bluetooth Sound Power Amplifier 2.1 Channel Bass & Treble Control Amp Audio Subwoofer 100W + 50W x2 - AliExpress

Fosi Audio BT30D Pro TPA3255 Hi-Fi Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Class D Integrated Amp 165 Watt x2+350 Watt for Home Outdoor Desktop Bookshelf Speakers/Subwoofers