The M160 and M260 are built-in high-capacity lithium batteries that can meet the 4-6 hour uninterrupted work configuration of the Bluetooth function of the acoustic guitar stereo amplifier. It has the advantages of small size and light weight for portability, and high-efficiency stereo Class-D power amplifier design. The M160 has a 60 watt stereo power output. The M260 is a 120 watt stereo power output that can be placed in different orientations with the MC60 cabinet. The product has two independent channels and four signal input ports, including 6.35 and XLR set input ports, each channel is equipped with 48V phantom power and 10pcs reverb and 6pcs chorus effects. Feedback automatic control(fbc), acoustic guitar fingering mode(tone), phase and exciter function and three-band equalization. The back panel contains APP recording interface, external stereo input, stereo headphone output, effect loop, DI balanced output. Pedal interface, access to PAS-SW pedal in the play can be fast Turn on the effect of turning off the corresponding channel or cut the amplifier to the mute state.