The Ampeg SGT-DI Blue Line Anniversary Edition is an all-in-one Bass Box. This SGT-DI Blue Line Anniversary Edition preamp and DI is identical to the silver Ampeg SGT-DI—but it's blue! The same blue as the original 1969 “Blue Line” SVT amplifier. 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 mids, Ultra-Hi and 3-way Ultra-Lo switches, a variable compressor, and an Aux /Headphone section. The SGT-DI also includes an IR Loader/Cab Simulator. Choose from three classic factory cabs or up to three cabs of your own by using the free Ampeg IR Loader application. Plus! Get the 75th Anniversary Free IR Pack, which includes the SVT-610HLF, SVT-810AV, and SVT-15e cabs. Combining time-tested Ampeg tone with modern capabilities, the SGT-DI demonstrates our commitment to honoring our legacy while also serving the needs of contemporary players.