The XY-S350H 2.1 Channel Amplifier Board is a powerful and versatile audio amplifier designed for DIY audio enthusiasts and professional sound systems. Built with the high-performance TPA3251D2 amplifier chip, it delivers crystal-clear sound with high efficiency and low distortion.

This amplifier board provides 220W + 220W stereo output with an additional 350W subwoofer channel, making it perfect for home theater systems, DIY speakers, subwoofer setups, and custom audio projects.

With Bluetooth 5.1 connectivity, AUX input, USB sound card support, and USB flash disk playback, the XY-S350H offers multiple audio input options. It also integrates Sinilink App control, allowing you to adjust audio settings and customize the listening experience directly from your smartphone.

The board is built with high-temperature resistant materials (105°C rated) ensuring reliable performance and effective heat dissipation even during long operation.

Whether you are building a DIY amplifier, upgrading a speaker system, or designing a powerful audio setup, the XY-S350H amplifier board delivers outstanding sound performance and flexibility.

Key Features

• High Power Output: 220W × 2 stereo + 350W subwoofer channel

• Premium Amplifier Chip: TPA3251D2 high-efficiency digital amplifier

• Bluetooth 5.1 Connectivity: Stable wireless audio streaming

• Multiple Inputs: AUX, USB sound card, USB flash disk

• App Control: Compatible with Sinilink mobile app for audio tuning

• DIY Friendly: Ideal for custom audio amplifier projects

• Efficient Cooling: 105°C rated material for reliable heat dissipation

• Wide Application: Home theater, speaker systems, subwoofer builds

Specifications

• Model: XY-S350H

• Amplifier Chip: TPA3251D2

• Output Power: 220W × 2 + 350W

• Channel: 2.1 Channel

• Bluetooth Version: 5.1

• Inputs: Bluetooth / AUX / USB Sound Card / USB Flash Disk

• Control: Sinilink Mobile App

• Application: DIY Amplifier, Home Audio Systems