Peak Output Power: 7800W. This 4-channel Amplifier Is 2-ohm Stable (4-ohm Bridged), High-level (horn) / Low-level (RCA) Input, Variable Electronic High-pass / Low-pass Crossover, Selectable 12dB Bass Boost EQ, Gain And Protection Circuitry For Impedance Overload, Horn Short Circuit, Thermal Overheating And DC Output.
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ZK-MT21 Channel Bluetooth 5.0 CS8673E 2.1 Subwoofer Amplifier Board 50W X 2+100W Power Audio Stereo Amplifier Board Bass AMP AUX
Aliexpress UK
New active subwoofer power amplifier board, real material, excellent effect. The power amplifier part uses the TPA3255 digital power amplifier chip, and the peak power is as high as 600 watts/2 ohms, 300 watts/4 ohMs.
eBay
ZK-MT21 Channel Bluetooth 5.0 CS8673E 2.1 Subwoofer Amplifier Board 50W*2 +100W Power Audio Stereo Amplifier Board Bass AMP AUX
Aliexpress UK
Max Power: 800W. Type: Car Subwoofer. Featuring Bluetooth support for wireless audio streaming, this subwoofer eliminates the need for complicated connections to your audio source. Enjoy the freedom of connecting your smartphone or other Bluetooth-enabled devices directly to the subwoofer for seamless music playback.
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750-2000W*2 High Power Professional Sound Amplifier 2/4 Channel Hifi Digital Subwoofer Amplifier Stage Home KTV Audio Amplifier
Aliexpress UK
800W Stereo Surround Sound. Peak Power：800W. Ultra-thin Subwoofer， Saving valuable space in your vehicle. Compatible with various car stereo audio systems and car host devices. Excellent Heat Dissipation ， Cast aluminum ensures stable performance.
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ZK-MT21 Channel Bluetooth 5.0 CS8673E 2.1 Subwoofer Amplifier Board 50W X 2+100W Power Audio Stereo Amplifier Board Bass AMP AUX
Aliexpress UK
Pioneer TS-WX300A Sub Active Powered 12" Subwoofer Built in Amplifier 350w RMS TS-WX300A 30cm Powered Active Subwoofer with Class-D built-In Amplifier (1300 W) Single Voice Coil. Powerful Bass, that's easy to install.
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AIYIMA A09 TPA3116 Power Amplifier HiFi Bluetooth 5.0 Subwoofer Amplifier 5.1 Surround Amplificador Home Audio Amp 50Wx6
Aliexpress UK
With PBTL/SUB switch: convenient to use G2 PRO as full frequency amp or subwoofer amp, a SUB output is specially designed for active subwoofer. G2 PRO can connect to both passive and active subwoofers. And two G2 PRO can be used to drive left and right channel independently to avoid mutual interference. Max 300W output power: using TPA3255D2 amp chip and equipped with 32V/5A large power supply, enough to drive 320W passive speakers or subwoofers. It also has a good match with outdoor/ bookshelf/ computer/ desktop /ceiling /floor standing speakers.
eBay
ZK-MT21 Channel Bluetooth 5.0 CS8673E 2.1 Subwoofer Amplifier Board 50W X 2+100W Power Audio Stereo Amplifier Board Bass AMP AUX
Aliexpress UK
Their GX-A3001 mono subwoofer amplifier can send up to 300 watts RMS to your sub. 200 watts RMS x 1 at 4 ohms (300 watts RMS x 1 at 2 ohms). preamp and speaker-level inputs. variable bass boost (0-12 dB at 45 Hz).
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Tpa3116 Subwoofer Amplifier Board Tpa3116 Digital Amplifier Board Dc12-24V 100W High Power Bass Mono Digital Amplifier Board
Aliexpress UK
Premium Quality OE AUDIO 12" Built in Amplified Active Single Subwoofer Box 1800 watts. 12” WOOFER WITH 50 OZ MAGNETS. SINGLE 12" ACTIVE ENCLOSURE Version 2. Depth at Bass: 36cm. 2” VOICE COIL WITH PP CONE.
eBay
ZK-MT21 Channel Bluetooth 5.0 CS8673E 2.1 Subwoofer Amplifier Board 50W X 2+100W Power Audio Stereo Amplifier Board Bass AMP AUX
Aliexpress UK