2.0 Active Built-in Sound Card One-Wire Small Pair Box Computer Notebook Speaker Line Control Power Amplifier PCBA Circuit Board Solution (CST8102A)

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5V power supply, 3W power amplifier line control board

XS9971 5V power supply 3W power amplifier line control board (CST8102A)

(CST8102A) bits can be compatible with LTK5128D XS9971 foot. HAA2018, NS4165B, XPT8871, MIX2018A, higher cost performance

This plan is divided into two schemes: one single-channel power amplifier with two speakers and two power amplifiers with two speakers

This PCBA is equipped with a built-in USB sound card dual-channel Class D power amplifier. It can be directly connected to a computer via a single USB cable, simultaneously achieving the functions of power supply and sound decoding (no longer requiring an audio cable). The circuit is simple, easy to use, and has excellent sound quality. It is a good choice for upgrading and improving the grade of ordinary line-controlled power amplifiers. .

The power amplifier IC adopts CST8102A and XS9971, with a maximum power of up to 5W+5W. The built-in sound card uses USB2.0 Class V1.0 USB Audio decoder, supporting a maximum sampling rate of 48KHz, which can achieve audio playback with high sound quality.

The interfaces are as follows (from top to bottom) : USB input (5V), left and right channel output, and power indicator light (optional)

Schematic diagram of product examples

Compared with the conventional single power amplifier wire control boards on the market, this wire control board realizes the convenience of working with just one wire connected to a computer. At the same time, it has better audio indicators (signal-to-noise ratio, separation, etc.), making it a better choice for upgrading and adding value to ordinary wire control power amplifiers.