I originally got this for a rehearsal so I wouldn't have to lug my bass cab. Since then I also discovered it is very useful for tone shaping. When I gig out it is used with a Hartke 3500 head. I keep the EQ on the head off and use the Ampeg DI to adjust low, mid and hi levels.
DI box with overdrive scramble switch. Contains standard Ampeg EQ along with high and low shaping. Also has auxiliary in with headphone jack.