IME all of the Diezels I've owned have some of that lower mid thing going on, that includes the Hagen. The mid cut on the D-Moll is centered at 430hz and if you use it sparingly, it really works great for taming that area
My experience as well. I was dead set on getting a used D-Moll and the guy who was selling it, offered it at an insanely low price too (€900, around $1000 USD), but after thoroughly playing and tweaking it, I left without the amp.
I couldn't dial out that low-mid congestion/wooly saturation and I purposely didn't bring a guitar with too high output humbuckers either.
On paper it ticks all the boxes I want:
3 channels (or 2 + boost)
great, gorgeous cleans (like top 3 best ever!)
footswitchable fx-loop
bonus:
footswitchable 2nd master
mid-cut
24" wide
But alas, the sound was not for me. If only there was a sort of ultimate 24" wide, 50W/60W 'hybrid' that combines the Mesa Mark (including Crunch mode!!!),
Engl Savage 60, EVH 5150 and the D-Moll's cleans+ functionality (heck, it could do with the Fryette/VHT Sig:X's Rhythm channel), I'd have my desert island amp. I'm a gigging player, so portability matters a bit more to me than 100W(+) powah.