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Small rectangular amplifier board inside clear acrylic case with terminals and DC socket

Ruth's sister

Ruth's sister Xy-502b internal power cable

SKU CH-TGB4-G8RE4

A dual-channel 50 W amplifier board accepting 4.5-27 V DC power with Bluetooth and line-in inputs plus pop-free operation

  • Pop-free audio eliminates start-up and pause clicks
  • Dual-channel 50 W output drives stereo speakers cleanly
  • Wide DC 4.5–27 V input suits varied power sources
  • Bluetooth and line-in modes give flexible connectivity
  • Acrylic shell with Panasonic capacitors protects the board

Xy-502b Digital Stereo Amplifier Board

The Xy-502b is a dual-channel digital audio power amplifier board rated at 50W per channel. It operates from a wide DC 4.5-27V supply range and includes Bluetooth and line-in audio input modes. An acrylic shell protects the circuitry and Panasonic capacitors are used on the board.

Audio Projects and DIY Speaker Builds

This board suits hobbyists building powered speakers, upgrading vintage audio gear or adding wireless streaming to passive systems. The pop-free design avoids audible thumps during power cycling or track changes. Builders who need a finished chassis-mounted amplifier with volume knobs and binding posts should look at complete amplifier modules instead.

Dual 50W Output at 4.5-27V DC

The defining specification is the dual 50W output capability across a 4.5V to 27V DC input range. This voltage window determines which power supplies or battery packs can drive the board to its rated performance. Verify that your chosen source stays within these limits before purchasing.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $15.99
Typical for this category: the median of 7,839 items is $14.99.

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Specifications

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