I’ve played two poundcakes-
Mine which I still own is a 25th anniversary- which is essentially a mk4. It to me is a more raw and German take on a bogner xtc , with some Marshall influences as well.
I also tried a friend’s mk2- this amp seemed more like a cousin to mine rather than a sibling if that makes sense. The mk2 was more raw and marshally than mine and had its own thing going. Both are good and had unique sounds, but the mk2 was more raw and the 25th was more juicy for leads.
My 25th anniversary has more switches and options than the other pound cakes I’ve seen
there are 4 channels- 3 of which aren’t the clean one. The 3 share an EQ, but do have different voices from each other, and each has three gain modes- green, yellow, and orange, a raw switch, and a bright switch. So each of the channels have their own gains and each of those switches- which allows for a lot of range. There’s also a “brown switch” on the back which I haven’t messed with much but is a minor change.
In short, the Steavens Poundcake sound is somewhere in between the German sound and the Marshall sound, and fairly raw. Neither of the ones I played were specifically gainy enough to play modern metal without a boost, but take well to boosts. If you can find one , I think they are worth trying
As a bonus, here is the recording I took- apologies for the out of tune parts in the start