The module can be used as an ordinary power amplifier and active speaker to add connection function compatible with Bluetooth. 7PIN output interface is 2.54mm through hole pitch. The 7-pin output interface is: + power, ground, left channel, right channel, mute, LED indicator and reserved port.
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SMSL AD18 HIFI Audio Power Amplifier Supports Optical Coaxial Bluetooth4.2 DSP 80W*2 Class D Full Digital Sound Amplifier
Aliexpress UK
After the Bluetooth is disconnected, the power amplifier board is prepare for the second pairing, and after playing the "prompt ", it enters the pairing mode and waits for pairing. The indicator flashes slowly when the music is played;.
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UK YS New Product Audiophile Gold Silver Nano Oil Immersed Audio Amplifier CD Decoder Tube Amplifier Fuse 6x32mm
Aliexpress UK
1 PCS TPA3116D2 100W Digital Power Amplifier Board NE5532 OPAMP 8-25 V. Digital amplifier can make amplifier plate with a pre-match buffer of op amp NE5532. 2.1 Channel HiFi Bluetooth 5.0 Digital Power Amplifier Subwoofer Audio Amp Board.
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Oracle II 01 02 Single Dual OpAmp Hybrid Audio Operational Amplifier Op Amp Upgrade OPA2604 NE5532 MUSES02 LME49720HA
Aliexpress UK
Item Type: Preamplifier Board. 1 x Preamplifier Board. [DIRECT COUPLING] Direct coupling type amplification, the whole circuit has no coupling capacitance, and the distortion is reduced to 0.01%. Channel: 4 Channel.
eBay
110/220V 2000W Bluetooth Power Amplifier Audio Subwoofers HiFi Stereo Surround Sound Digital Amplifiers For Home Karaoke theater
Aliexpress UK
High-Power Digital Power Amplifier Board Audio Amplifier Module Class D Dual-Channel 2 120W XH-M543. Rated output power: 120W 2. Type:Digital Power Amplifier. 1 x Digital Power Amplifier. Audio input: AUX.
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Nobsound NS-13G Mini TPA3116 Digital Power Amplifier Class D Stereo Desktop Audio Amp 100W+100W for Home Stereo Speaker
Aliexpress UK
1 TDA7297 AC/DC 12V 2 15W Digital Stereo Audio Amplifier. AC/DC, 2.0 / dual channel / stereo,12V/2A when using, the output power of 15W +15 W, peak up 25W +25 W. Power: 15W +15 W. High signal to noise ratio, Upgraded version of the radiator, wider and thicker, better cooling effect.
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HiFi EL34 Single-Ended Class A Tube Amplifier DIY Kit Stereo Audio Amp PCB Board with 12ax7 Tube Options DIY kit
Aliexpress UK
Upgraded coupling capacitance. 4, Upgraded coupling capacitance. Excellent sound quality even with a few peripheral components. 5, Excellent sound quality even with a few peripheral components. This item is double audio power amplifier.
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Car Audio Modified Power Amplifier 1/0 AWG to 4 AWG Amplifier Input Reducer Power Ground Pin Terminal Connector
Aliexpress UK
Power: 150W. Digital amplifier module installation is simple, and it does not require particularly complicated operations. Peamplifier uses a straight-coupled test amplifier, and the entire circuit has no coupling capacitors, which reduces the distortion to 0.01%.
eBay
Douk Audio H7PRO HiFi Class D TPA3255 Balanced XLR Amplifier Digital Stereo Home Power Amp with VU Meter 300W×2
Aliexpress UK