The SGT-DI™ preamp and DI gives the modern bassist a complete rig in one stompbox. Enhanced Super Grit Technology™ overdrive circuitry with legendary Ampeg SVT® and B15 voices, versatile 3-band EQ with sweepable Mid control, Ultra-Hi and 3-way Ultra-Lo switches, variable Compressor, and Aux/Headphones section. Plus Ampeg's first IR loader/cab simulator. Choose from 3 classic factory cabs or up to 3 custom cabs 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 Free Ampeg IR Loader application Aux /Headphone section Balanced XLR and ¼ line outputs ONBOARD SUPER GRIT TECHNOLOGY (SGT) FOR THAT AMPEG GROWL Get the warm, bold growl that defines Ampeg's tone with the integrated Super Grit Technology (SGT) overdrive circuit. SWEEPABLE MIDS AND VOICING SWITCHES TO SCULPT YOUR TONE Combining classic Ampeg sound with modern features, SGT-DI shows Ampeg's commitment to respecting their legacy while meeting the demands of modern players. SGT-DI is the first physical Ampeg product featuring IRs and IR loading. SGT-DI comes loaded with 6 Ampeg factory cab IRs, 3 of which can be replaced with your own. Cab Mode includes Ampeg Heritage B-15, Heritage SVT-410HLF and SVT-810 Squareback impulses. User Mode includes overwriteable Ampeg SVT-112AV, SVT-210AV, and SVT-212AV impulses The Cab Level control lets you adjust and store the amount of Cab IR sound in your tone. IR Off Mode completely bypasses the IR circuitry.