Points to the second hardware revision, which typically fixes power management bugs or improves signal stability over version 1.

: Underbelly or edge-mounted solder terminals for routing the left, right, and ground channels directly to an external power amplifier stage. Core Specifications and Performance

If you are currently troubleshooting or designing a layout, let me know:

is a highly popular, compact Bluetooth audio receiver and decoder circuit board designed for custom speaker builds, automotive retrofitting, and DIY audio electronics. Operating within a flexible , this revision 2 (v2) board stands out for delivering stable wireless audio decoding in an ultra-small form factor. It is engineered primarily for engineers, makers, and repair technicians seeking a low-latency, low-noise component to bypass bulky wiring and upgrade legacy sound systems. Technical Architecture and Pinout Configuration

: This is often a sign of insufficient power or an impedance mismatch with the connected speakers. Verify the speaker wattage matches the board's output.