{"id":9533703880941,"title":"ZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W*2+100W Subwoofer Power Amp Module, Bluetooth 5.0 AUX Input Treble Bass Control for DIY Speaker Home Theater Audio","handle":"zk-tb21-2-1-channel-bluetooth-amplifier-board-50w-2-100w-subwoofer-power-amp-module-bluetooth-5-0-aux-input-treble-bass-control-for-diy-speaker-home-theater-audio","description":"\u003ch3\u003eZK-TB21 2.1 Channel Bluetooth Amplifier Board, 50W*2+100W Subwoofer Power Amp Module, Bluetooth 5.0 AUX Input Treble Bass Control for DIY Speaker Home Theater Audio\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Audio ZK-TB21 is a high-performance 2.1 channel Bluetooth 5.0 power\namplifier board designed for DIY speaker builds, home theater setups, and\ncustom audio projects. Delivering a robust 50W + 50W for the left and right\nchannels plus 100W for the subwoofer, this compact amp module packs serious\npower into a sleek black enclosure. Bluetooth 5.0 ensures a stable, low-\nlatency wireless connection, while the AUX input (3.5mm) provides a reliable\nwired audio option. Five dedicated control knobs let you fine-tune your sound\nwith precision — adjust subwoofer frequency (20–200 Hz), subwoofer volume,\nleft and right channel treble, left and right channel bass, and main volume\nindependently. Power input is supported via a 5.5x2.1 DC head or 2P terminals,\naccepting DC 12–24V. Whether you are building a custom speaker cabinet or\nupgrading an existing audio system, the ZK-TB21 offers the flexibility and\npower output to deliver rich, full-range sound.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e2.1 Channel Surround Sound: Adopts professional audio solution, output power 50W*2+100W, brings rich stereo sound and heavy bass effect, ideal for building personal home audio system.\u003c\/li\u003e\n \u003cli\u003eStable Bluetooth 5.0 Connection: Fast pairing, anti-interference and long transmission range, smoothly play music from phones, tablets and other Bluetooth-enabled devices.\u003c\/li\u003e\n \u003cli\u003eDual Input \u0026amp; Tone Adjustment: Supports Bluetooth and AUX wired input. Independent treble and bass knobs let you customize sound effect freely to fit different listening preferences.\u003c\/li\u003e\n \u003cli\u003eCompact \u0026amp; Easy DIY Installation: Mini size saves space, simple wiring design, perfect for DIY speakers, home theater, desktop audio and small car audio refitting.\u003c\/li\u003e\n \u003cli\u003eWide Application Scope: Reliable power performance, suitable for home entertainment, game audio, outdoor speaker and daily multimedia sound playback use.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-08-17T21:01:20+10:00","created_at":"2026-08-17T19:34:32+10:00","vendor":"diymore","type":"Amplifiers","tags":["electronics_NR_Aug2026"],"price":15300,"price_min":15300,"price_max":15300,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50498469363949,"title":"Default Title","option1":"Default 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2.1 Channel Bluetooth Amplifier Board, 50W*2+100W Subwoofer Power Amp Module, Bluetooth 5.0 AUX Input Treble Bass Control for DIY Speaker Home Theater Audio\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Audio ZK-TB21 is a high-performance 2.1 channel Bluetooth 5.0 power\namplifier board designed for DIY speaker builds, home theater setups, and\ncustom audio projects. Delivering a robust 50W + 50W for the left and right\nchannels plus 100W for the subwoofer, this compact amp module packs serious\npower into a sleek black enclosure. Bluetooth 5.0 ensures a stable, low-\nlatency wireless connection, while the AUX input (3.5mm) provides a reliable\nwired audio option. Five dedicated control knobs let you fine-tune your sound\nwith precision — adjust subwoofer frequency (20–200 Hz), subwoofer volume,\nleft and right channel treble, left and right channel bass, and main volume\nindependently. Power input is supported via a 5.5x2.1 DC head or 2P terminals,\naccepting DC 12–24V. Whether you are building a custom speaker cabinet or\nupgrading an existing audio system, the ZK-TB21 offers the flexibility and\npower output to deliver rich, full-range sound.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e2.1 Channel Surround Sound: Adopts professional audio solution, output power 50W*2+100W, brings rich stereo sound and heavy bass effect, ideal for building personal home audio system.\u003c\/li\u003e\n \u003cli\u003eStable Bluetooth 5.0 Connection: Fast pairing, anti-interference and long transmission range, smoothly play music from phones, tablets and other Bluetooth-enabled devices.\u003c\/li\u003e\n \u003cli\u003eDual Input \u0026amp; Tone Adjustment: Supports Bluetooth and AUX wired input. Independent treble and bass knobs let you customize sound effect freely to fit different listening preferences.\u003c\/li\u003e\n \u003cli\u003eCompact \u0026amp; Easy DIY Installation: Mini size saves space, simple wiring design, perfect for DIY speakers, home theater, desktop audio and small car audio refitting.\u003c\/li\u003e\n \u003cli\u003eWide Application Scope: Reliable power performance, suitable for home entertainment, game audio, outdoor speaker and daily multimedia sound playback use.\u003c\/li\u003e\n \u003c\/ul\u003e"}