The SGT-DI™ preamp and DI gives modern bassists an entire rig in a single stompbox. It delivers an enhanced Super Grit Technology™ overdrive circuit featuring iconic Ampeg SVT® and B15 voices, versatile 3-band EQ now with sweepable Mid circuit, Ultra-Hi and 3-way Ultra-Lo switches, a variable compressor, and an Aux /Headphone section. Plus! Introducing the first IR Loader/Cab Simulator from Ampeg. Choose from three classic factory cabs or up to three cabs of your own by using the free Ampeg IR Loader application.

- 3-Band EQ with sweepable Mid circuit

- SGT circuit with SVT and B15 voicing switch

- Onboard IR Loader/Cab Simulator

- Ultra-Hi and 3-way Ultra-Lo switches

- Variable 10:1 compressor

What Is an IR and Why Should I Care?

A speaker cabinet impulse response or “IR” is essentially a digital audio snapshot of a cabinet that captures the acoustic characteristics of that specific cab, along with the signal chain used to record it — microphone(s), preamp(s), cable, etc. — and the room in which it was recorded. IRs allow you to “virtually” switch between different cab sounds in the same way you would swap physical cabs.

SGT-DI is the first physical Ampeg product featuring IRs and IR loading.

SGT-DI comes with six preloaded Ampeg factory cab IRs, three of which may be replaced with your own:

- Cab Mode includes Ampeg Heritage B-15, Heritage SVT-410HLF, and SVT-810 Squareback IRs.

- User Mode includes overwritable Ampeg SVT-112AV, SVT-210AV, and SVT-212AV IRs

- The Cab Level control enables you to adjust and save the amount of cab IR sound in your signal.

- The IR Off Mode bypasses the IR circuitry altogether.