TPA3255 600W Dual Channel Bluetooth Amplifier Board for Audio Repair

Sienwiny YS-KL5 TPA3255 Bluetooth Stereo Amplifier

The YS-KL5 is a compact 2.0-channel Class-D audio amplifier built around the TPA3255 chip. It combines Bluetooth 5.3, USB and auxiliary audio inputs with a dedicated subwoofer output for home audio, bench testing, and speaker upgrade projects.

Audio Specifications

• Amplifier chip: TPA3255 Class D.
• Rated output: 300W + 300W; actual output depends on power supply voltage/current, speaker impedance, and program material.
• Inputs: Bluetooth 5.3, USB playback, and AUX.
• Outputs: 2.0 speaker output plus subwoofer output.
• Frequency response: 20Hz-20kHz.
• Speaker impedance: 2-8 ohms.
• Power input: DC 24-36V.

Controls and Use

• Front-panel controls provide power, bass adjustment, mode selection, and volume control.
• Bluetooth wireless range is listed up to 15m in suitable open conditions; walls and radio interference reduce range.
• Use a sufficiently rated DC supply for the connected speakers. High output levels require adequate power capacity and ventilation.
• The subwoofer output is an audio output for a compatible powered subwoofer or appropriate downstream amplification; it is not a high-power speaker terminal.

Plug Options

• US Plug: supplied power adapter with US plug configuration.
• EU Plug: supplied power adapter with EU plug configuration.

Package Contents

• 1 x YS-KL5 amplifier
• 1 x matching power adapter in the selected plug configuration
• 1 x 3.5mm AUX cable