17-volt, high-headroom, discrete Class-A preamp 5-band tone control with sweep-mid and low frequency filter EQ mode tailors EQ for bass or most other instruments Phase control and precision notch filter reduces feedback One-knob adjustable compressor smooths playing dynamics Integrated fully-chromatic digital tuner Volume boost foot switch with level control (+12 dB) Balanced XLR D.I. with pre/post EQ setting and ground lift