Fishman Platinum Pro EQ, analog preamp for acoustic guitar & bass, class-A preamp, tone shaping: 5-band eq with sweepable mid, adjustable low-cut filter, feedback control: sweepable notch filter and phase invert switch, +12db boost, balanced XLR DI out with pre/post EQ switch, integrated tuner, dimensions: 158mm x 143mm x 54mm, power: 9V battery or optional power supply (not included, #108096)