Got home and plugged in.
Dingwall ABZ -> LB 30 head -> Mesa PH 115 8ohm
The sound out of the box is good. A little more bright and lean in the low-mids than I recall from my test with the same bass and a different cab. Also, much louder than I remember. Much. My apartment walls were shaking at less than 12-o'clock. I have little doubt that I could fill a studio with sound for a jam.
I also paired this up with my Mesa PH 212, and found it quieter and less fun than the 115.
The EQ has a decent range. The voicing switches are fairly interactive between the low and bright switches. With the low boost comes a boost in the highs that made for too much hiss with the bright switch on, so those two tend to give the best sound when they are on/off or off/on. The bass switch definitely moves the flavor from big pillow low to focused and tight. The mid switch is very subtle, and I can't honestly note anything happening when flipping it. Any advice for what to listen for?
I'm not madly in love at first thump, but I see potential. The thing that started to set hooks in me is the dynamic nature of it. I started plucking without a lot of digging in, which gave nice, pleasant tones, but not the character I expected. As soon as I dug in, it became obvious that the more agressive finger-picking brought out some growl; warm mid-range growl, not upper mid-snarl. I may have an issue of "the brave, not the arrow" here. I think I need to push away from my technique comfort-zone with my M6 Carbine head to appreciate what this Bastard can do.
I'm certainly looking forward to getting into a live jam to hear this amp open up. I expect that a "practice amp" tag for this low-watt head isn't even close to the way this should be thought about.