TPA3255 Bluetooth 5.1 Power Amplifier Board HiFi 2.1 Channel 220Wx2+350W Digital Audio Receiver Power Amplifier Module with Treble and Bass Control for DIY Speakers
Name: 2.1 channel BT power amplifier Channel: 2.1 channel (left channel+ right
channel+subwoofer) BT Version: 5.1 Model:ZK-AS21 Audio input: BT+AUX+USB+USB
sound card(dial wheel key to switch mode and song) Chip Solution:TPA3255
Adaptive power supply: DC16~38V, ≥10A Output power: R&L channel≤220W
subwoofer≤350W Voltage gain:30dB Size:14113226mm Adaptive speaker: L&R
channels30-220W,3-8Ω subwoofer 30-350W, 2-8Ω Protection Mechanism: Protection
against reverse connec- tion,undervoltage,overheating, overcurrent and short
circuit (automatic recovery without restart) KIND TIPS： When the audio signal
input is large enough and the power supply voltage/current is large enough,
there will be enough output power! The higher the power supply voltage, the
greater the output power, and the smaller the speaker impedance, the greater
the output power! Please make sure that the power of the adapted power supply
is greater than the actual working power of the power amplifier! Packing
Include: ZK-AS21 Power Amplifier Board  1 Protective Shell  1 Set
Screwdriver  1 Knob  5
 
Product Features
  

         
HI-FI & StereoHigh-quality 2.1-channel 220W+220W+350W Bluetooth 5.1 amplifier board, with multiple audio input methods such as AUX, Bluetooth, U disk, and USB sound card, allowing you to enjoy the fun of music anytime, anywhere.
         
Function upgradeSupports APP control, and can modify Bluetooth name and password settings. The 5.1 Bluetooth version has settings such as adjustable volume, sound on/off, and timed shutdown. Comes with 10 natural sleep songs and up to 1023 sound combinations. Not only can you display the playlist of the U disk, you can also shake the phone to change songs or use the dial/mode key to switch songs.
         
Professional chipUsing 2 Texas Instruments TPA3255 chips, it is a high-performance Class D amplifier with Class D efficiency, which can bring true high-end sound quality. The device adopts advanced integrated feedback design and proprietary high-speed gate driver error correction technology. This technology enables the device to maintain ultra-low distortion across the entire audio band while providing high-definition sound quality.
         
Super Compatibility 5.1 Bluetooth version, with higher transmission efficiency, more stability and longer transmission distance. In open space, the wireless range can reach 15 meters (49 feet). It can be widely used in various devices such as tablets, PCs, TVs, smartphones, laptops, etc.
         
Safety Protection The amplifier board has short circuit, overcurrent, overheating and anti-static protection to prevent complete failure. When overloaded, the device will report the fault to the processor to protect itself from damage.