ZK-AS21 TPA3255 Bluetooth 5.1 Power Amplifier Board,2.1 Channel 220Wx2+350W HiFi Subwoofer Subwoofer Power Amp Mini Digital Audio Amp Module for DIY Speakers,DC 16-38V,BT USB AUX Input

아마존 달러(USD) 가격을 각 날짜의 환율로 원화 환산해 표시합니다. 현재 환율 $1 = ₩1,475 (2026-07-24 기준)

상품 특징

• 2.1 Channel Subwoofer Audio Amplifier Board: This ZK-AS21 upgraded power amplifier is 2.1channel, allows you to connect 2 passive speakers and drive a subwoofer. The upgraded AS21 adds three XH2.54-3P terminals, namely the Power Amplifier Input Interface, Microphone Preamp Reverb Send Interface and Microphone Preamp Reverb Return Interface. And it comes with Treble and Bass buttons, independent subwoofer volume adjustment buttons and 20 - 200Hz subwoofer frequency adjustment buttons, which is very friendly for audiophile, you can adjust the Treble and Bass buttons, make the bass more shocking and the treble clearer, make the sound more layered
• 220W*2 + 350W High Power Output: This AS-21 audio amplifier has 220W*2 output power for left and right channel and 350W output power for subwoofer, it can drive two high-power speakers (30-220W, 3-8 ohms) and one subwoofer (30-350W, 2-8 ohms), and the adapted power supply is DC16-38V/10A or above. Note: The higher the power supply voltage/current, the higher the output power, the lower the speaker resistance, the higher the output power, the adapted power supply should higher than the actual working power of the amplifier
• HIFI Audio Power Amplifier: The ZK-AS21 power amplifier board built-in two TPA3255 power amplifier chips, TPA3255 is a high-performance class D power amplifier chip, can make thedevice maintain ultra-low distortion in the whole audio frequency band and show high-definition sound quality at the same time. The wiring around the chip is an window tin spraying design to increase the output power
• Multiple Audio Input Modes: This Mini amplifier receiver built-in Bluetooth 5.1, USB and 3.5mm AUX Input. Bluetooth 5.1 mode, faster transmission speed, lossless decoding, lower distortion rate, connection distance to audio equipment is 10m/33ft. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected. 6 x Low noise preamplifier 5532 group can improve the sound quality and volume, increase the gain
• Multiple Protection Function: This Bluetooth Amp module is designed with multiple protection mechanisms, include over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it. Besides, There is a Long-life Ultra Silent Fan above audio chips, for heat dissipation and protection of Bluetooth amplifier board

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