Features: Dual channels preamp pedal, and each channel with gain and volume controls. The clean channel is shimmering and bouncy, the gain channel can achieve purring blues tones, grinding crunch and soaring lead sounds. Integrated speaker cabinet simulation function; and Independent 3-band EQ: Treble, Middle, Bass. 2 different modes for footswitch operation: preamp on/off or channel A/B. The LED button can switch between channel A/B(Blue/Red), or switch cab simulation on/off.