DB750: Tone Question

Hi All -

I've owned a DB750 for several years now. I love the high volume and slam that the amp has, but I've noticed that there's very little low end, even with the bass EQ cranked and the deep switch engaged. I usually end up putting a small parametric EQ in my bag when using the Aguilar just in case I need to dial in some more low end. I've got a Walter Woods Ultra and an old SWR SM900 that when set flat each put out more low end than the Aguilar. It might also just be a case that the DB750 is voiced with less low end than the other two heads.

I've recently put the Walter through one AE112 and the DB750 through the other, matched their volumes, then set up an AB switch so I could flip between the two heads quickly. EQs on both were flat. The difference in low end response between the two is noticeable, the Aguilar was definitely lacking a bit in the bass area.

Is what I'm hearing from the DB750 similar to what anyone else is getting from the head, or does this sound like there might be something up with the amp?

(for cabs I'm using either a 1st generation Epifani UL 410 or 2 Berg AE112s.)