1. Increase the volume without colored sound. 2. Built-in two-band EQ control high and low frequency separately. 3. Directly access to the hardware design. 4. Powered by AC adapter. 5. BASS low frequency knob: Control the low frequency. Turn clockwise to increase the low frequency; turn the knob anticlockwise to decrease the low frequency. 6. DRIVE overload knob: Adjust the distortion effect. Turn clockwise to increase distortion; turn counterclockwise Turn to reduce distortion. 7. TREBLE high-frequency knob: Control the treble volume. Turn clockwise to increase the high frequency, turn counterclockwise to decrease the high frequency
