I have found that on the earlier ABMs that I’ve used that they seemed to need the volume pushed, which is very unlike the current 600 which is mahoosively loud from the off.
Additionally in comparison to TE, I’ve always found them really loud and my theory is that that is due to the in-baked voicing - the TE sound just seems to hit a hi-mid frequency that is really audible, whereas the Ashdown stock sound seems less focused/biased in that area.