{"product_id":"wuzhi-audio-zk-as21p-bluetooth-amplifier-board-300w300w600w-output-18-50v-dc-wide-voltage-input-vehicle-amplifier-external-potentiator","title":"Wuzhi Audio ZK-AS21P Bluetooth Amplifier Board - 300W+300W+600W Output, 18-50V DC Wide Voltage Input, Vehicle Amplifier (External Potentiator)","description":"Brand: Wuzhi Audio\u003cbr\u003e\u003cbr\u003e\u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Product Specifications\u0026lt;\/b\u0026gt;\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Parameter Details\u0026lt;\/b\u0026gt;\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Product Name?\u0026lt;\/b\u0026gt;2.1 Channel Bluetooth Amplifier Board 300W+300W+600W\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Model Number?\u0026lt;\/b\u0026gt;ZK-AS21P\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Power Supply Operating Voltage Range: \u0026lt;\/b\u0026gt;18-50VDC (Max 53V). Recommended: 36-48V DC, 12A or higher.\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;Max Output Power-\u0026amp;nbsp;Left\/Right Channel:\u0026lt;b\u0026gt; 300W@50V, 4?; 160W@50V, 8?-\u0026amp;nbsp;Subwoofer: 600W@50V, 2?; 300W@50V, 4?; 160W@50V, 8?\u0026lt;\/b\u0026gt;(Note: Higher voltage\/current and lower speaker impedance increase output power-always use a PSU rated above the amplifier’s operational demand.)\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Bluetooth Chip?\u0026lt;\/b\u0026gt;JL (Jerry) 5.1, Transmission Range: 15 meters\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Input Options?\u0026lt;\/b\u0026gt;Bluetooth + AUX + USB Flash Drive\/Sound Card\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Channel?\u0026lt;\/b\u0026gt;2.1 (Left + Right + Subwoofer)\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Amplifier IC?\u0026lt;\/b\u0026gt;Dual TPA3255 Chips\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Protection ?\u0026lt;\/b\u0026gt;Undervoltage, Overheat, Overcurrent, Short-Circuit Protection.Note: No reverse polarity protection-ensure correct +\/- connection!\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Dimensions?\u0026lt;\/b\u0026gt;\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;External Potentiator Version: 131.5×120×40mm\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt;\u0026lt;b\u0026gt;Weight\u0026lt;\/b\u0026gt;\u0026lt;\/p\u0026gt; \u0026lt;p\u0026gt; External Potentiator: Net 453g \/ Gross 572g\u0026lt;\/p\u0026gt;\u003cbr\u003e\u003cbr\u003e• 2.1CH Subwoofer Audio Amplifier Board The ZK-AS21P amplifier board features a 2.1-channel design, allowing you to connect two passive speakers and a subwoofer. Equipped with treble\/bass adjustment knobs, an independent subwoofer volume control, and a 20-200Hz frequency adjustment knob, it delivers optimized audio performance for audiophiles. Fine-tune the sound to experience deeper bass, crisper highs, and a more immersive, layered soundstage.\u003cbr\u003e• HIFI-Grade Audio Amplifier Powered by dual TPA3255 amplifier chips-high-performance Class D modules that ensure ultra-low distortion across the entire frequency range while delivering crystal-clear HD audio. The PCB utilizes advanced windowed tin-sprayed traces to enhance power output, while six low-noise JRC 2068D preamplifiers refine sound quality, boost volume, and improve gain.\u003cbr\u003e• Massive 300W×2 + 600W Output Packs 300W per channel (left\/right) and a staggering 600W subwoofer output, effortlessly driving high-power speakers and subwoofers. Requires an 18-50V DC\/10A+ power supply (wider voltage input: 18-50V DC). Note: Higher voltage\/current and lower speaker impedance increase output power-always use a PSU rated above the amplifier’s operational demand.\u003cbr\u003e• Versatile Audio Inputs Supports Bluetooth 5.1 (faster transmission, lossless decoding, \u0026lt;15m range), USB flash drives, USB sound card mode, and 3.5mm AUX input. Pro tip: Disconnect Bluetooth when using AUX for uninterrupted playback.\u003cbr\u003e• Advanced Protection \u0026amp; Cooling Built-in safeguards: over\/under-voltage, overheating, and short-circuit protection. A whisper-quiet, long-life cooling fan (stall-proof, noiseless) sits atop the amp chips, ensuring optimal heat dissipation and reliability.\u003cbr\u003e\u003cbr\u003eModel: ZK-AS21P-W\u003cbr\u003eColor: Black","brand":"Wuzhi Audio","offers":[{"title":"Default Title","offer_id":52346111983898,"sku":"MCAB0F5MCTW6N","price":93.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/6772\/2266\/files\/81AqlWjkfvL.jpg?v=1781262880","url":"https:\/\/craftedyogi.com\/products\/wuzhi-audio-zk-as21p-bluetooth-amplifier-board-300w300w600w-output-18-50v-dc-wide-voltage-input-vehicle-amplifier-external-potentiator","provider":"Craftedyogi","version":"1.0","type":"link"}