Lisheng LH-380 Guitar Headphone Amplifier. The amplifier is not amplifying the signal from my mandolin. There is no sound coming out of the device. Add new comment Comments 2024, November 29 - 21:56 #553941 torokj 15 years 4 months Hello, I'd check the battery and battery connections. 0
Hello,
I'd check the battery and battery connections.
0