3 Working Modes: Original/Extra/Ultra
    Original: Provide a strong and hard edge distortion sound with low noise level.
    Extra: For high gain, and more tube like distortion.
    Ultra: For a fatter drive tone, and a wider distortion range.
ŸFull metal shell
ŸVery small and exquisite
ŸTrue bypass
ŸDC 9V Adapter power supply