Product introduction: 1. Name: 50W * 2 dual track digital amplifier amplifier 2. Model: XY-502 3. Supply voltage: DC 4.5-27V 4. Output power: 50W * 2 5. Protection function: protection from reverse connection, overvoltage protection, non-voltage Protection; protection against overheating, short circuit protection 6. Noise level of signal: 102db 7. channel: double track 8. Dimensions: 63 * 51 * 22mm Color: blue Material: plastic Contents: 1x Two-channel stereo digital board amplifier Note: light shooting and various displays can cause the color of the element in the picture, slightly different from the real thing. The measurement error is permissible / - 1-3 cm.