The Tech 21 SansAmp Bass Driver DI is a preamp DI a lot of bass players will like because it makes ordinary gear sound fantastic! Exclusive Tube Amplifier Emulation circuitry delivers the warmth, presence, and punch of a souped-up bass system, and it gets monster overdrive sounds too. Includes an XLR out for DI and a parallel 1/4" out for running an unaffected signal to your stage amp. Has Presence, Drive, Level, and Blend controls; active Bass, and Treble EQ. Can use phantom power, 9V battery, or optional DC power supply. Highly recommended by our bass guys.Preamp, stompbox, and direct box in one Offers a wide range of bass amp sounds Active EQ boosts/cuts up to ±12db Phantom, 9V battery, or DC-powered (optional)