Hotone Acoustic Simulator effect pedal model: Omni ACcompact & user-friendly advanced DSP platform with high-quality 24-bit A/D/A conversion and excellent dynamic responsebuilt-in hi-res OLED display screen assignable footswitch with LED ringinternal circuit provides more headroom via standard 9V DC power supply 15 high-quality acoustic simulations inc. steel-string, nylon-string, acoustic basses, double bass and more15 presets