Specifications：

Product Name: bluetooth Digital Audio Power Amplifier Board

Product Model: XY-ST21PRO

Channels: 2.1 Channel

Output Power: 100W x 2 + 200W Subwoofer

Amplifier Chips: Dual-Core TPA3221

bluetooth Interface: IPEX interface for external antenna

Color Options: Black

Types Optional: Bare board / With shell / Potentiometer external connection

Features：

1. High Efficiency and Stability: The XY-ST21PRO utilizes dual-core TPA3221 amplifier chips, which are known for their high efficiency and stability. These chips ensure minimal power consumption while delivering high-definition sound quality, making them perfect for high-performance audio applications.

2. Enhanced Safety with Power Switch: This amplifier board comes with a built-in power switch, providing an added layer of safety for the user. The switch allows you to easily control the power supply, reducing the risk of electrical hazards.

3. Lossless Components for Superior Sound Quality: The use of high-quality, lossless components in the design of this amplifier ensures that sound quality is maintained. This makes it ideal for audiophiles who demand top-notch audio performance.

4. Independent High and Low Frequency Tuning: The amplifier board offers independent tuning for high and low frequencies, giving you the flexibility to adjust the sound to your preference. This feature makes it convenient to achiev