{"product_id":"zk-mt21-digital-power-amplifier-board-bluetooth-2x50w-100w-2-1-channel-audio-stereo-bass-power-subwoofer-amplifier-board","title":"ZK MT21 Bluetooth Amplifier 2x50W And 100W 2.1 Channel","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the ZK-MT21, a 2x50W + 100W 2.1 channel Bluetooth amplifier module designed to elevate your audio setup. This compact power amplifier board delivers rich stereo from both AUX and Bluetooth inputs, with a dedicated subwoofer channel for deep bass that enhances home theaters, shops, and multi-room systems. Built for reliability, it uses copper DC connectors and barrier terminals to handle high-current demands without heating, delivering stable performance even during lively listening sessions.\u003c\/p\u003e \u003cp\u003eTwo-input convenience lets you switch between wired AUX and wireless Bluetooth 5.0 input to stream from phones, laptops, TVs, or media players with ease. The classic rotary encoder main knob provides 360-degree stepless tuning and a simple long-press power action for effortless operation. Built-in protections guard against reverse connection, overheating, overcurrent, and short circuits, safeguarding both amplifier and speakers for reliable, long-term use.\u003c\/p\u003e \u003ch2\u003eBenefits \u0026amp; Tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eFlexible input options:\u003c\/b\u003e Stream via AUX or Bluetooth 5.0 (up to 15 meters) and adapt to any source.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePowerful, clear sound with deep bass:\u003c\/b\u003e 2x50W plus 100W dedicated subwoofer output delivers rich stereo and punchy low end for movies and music.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEasy operation with protection:\u003c\/b\u003e 360-degree rotary encoder with long-press power, plus anti-reverse, overheating, overcurrent, and short-circuit protections.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eProduct specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eProduct name:\u003c\/b\u003e 2.1 channel Bluetooth-compatible audio power amplifier module\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eModel:\u003c\/b\u003e ZK-MT21\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBluetooth:\u003c\/b\u003e 5.0 (unobstructed, up to 15 meters)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInput:\u003c\/b\u003e AUX + Bluetooth, 500 mV sensitivity\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eChannels:\u003c\/b\u003e 2.1\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePower amplifier chip:\u003c\/b\u003e Domestic power amplifier chip\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAdapter power supply:\u003c\/b\u003e 12–24 V DC, 5 A (24 V battery pack not allowed)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAdapted speakers:\u003c\/b\u003e 20–100 W, 4–8 Ω\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOutput power:\u003c\/b\u003e Left \u0026amp; right \u0026lt; 50 W each; Subwoofer \u0026lt; 100 W\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eProtection:\u003c\/b\u003e Anti-reverse, overheating, overcurrent, short circuit\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize:\u003c\/b\u003e 93 mm × 90 mm × 22 mm\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e ~130 g\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePackage includes:\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e1 x ZK-MT21 2x50W+100W 2.1 Channel Bluetooth Amplifier Module\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWarnings \/ Reminders\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003ePower adapter required:\u003c\/b\u003e DC 12–24 V \/ 5 A or higher; not included.\u003c\/li\u003e \u003cli\u003eThe product can be connected with an external antenna, but antenna and antenna base are not included.\u003c\/li\u003e \u003cli\u003eOutput power depends on input level and supply voltage\/current. Ensure your power supply can deliver enough current for the desired output.\u003c\/li\u003e \u003cli\u003eHigher supply voltage and lower speaker impedance increase output power; verify the PSU matches the amplifier’s requirements.\u003c\/li\u003e \u003cli\u003eColor may vary slightly from photos due to monitor\/light effects; measurements may vary by ±1–2 cm.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSince 2002, intercyprus.com has delivered reliable quality and trusted service.\u003c\/p\u003e\n\u003c\/div\u003e\u003cbr\u003e\u003cp\u003ePlease note: All electronic and mechanical equipment, devices and machines sold to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e","brand":"InterCyprus","offers":[{"title":"black","offer_id":51439529328982,"sku":"1005008480948967-black","price":28.86,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/S6c9abc0f40754b68aa3b5fe76bf800cfs.webp?v=1759134946","url":"https:\/\/www.intercyprus.com\/de\/products\/zk-mt21-digital-power-amplifier-board-bluetooth-2x50w-100w-2-1-channel-audio-stereo-bass-power-subwoofer-amplifier-board","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}