jeff beck.
he used a vintage tweed champ to record most all of the guitar parts on his last album...
as far as capturing big sounds from a small amp:
the mic, and correct placement, is key.
the proximity effect that you can get off of a small speaker, is MORE than enough to get you that thump that you like in a great room with a big 4x12 cab pushing air...
the mic does not care how many speakers you have, when close micing.
it hears TONE, not volume.
in terms of gain:
it makes sense, for recording, to use a low watt amp...
half the magic, is from pushing air and getting speaker excursion captured by the mic..
but the other half, is the way the preamp and power amp hit a 'sweet spot' and work together for saturation and clarity at the same time..
could be, you found the perfect amp for that specific setup.
for guys that are playing clubs, it's tricky, because they have to dial their sound in at MANY different volume levels, depending on the demands of the house.
believe me, i know, i did it professionally for 6 years full time....
and at some point, i drew down on everything....
my big 4x12's went away, and i had (2) 1x12's in closed backs, that i would set up in any fashion i needed, whether it was on the floor in front of me like monitors, or behind me pointing out at the club....
and having my mesa boogie made it possible to dial in killer tones at dinner theater volumes or wide open rock clubs.
but at that time, i only had a good ole sm57 to use...
now, i have a Palmer PDI-09, which is so much more consistent, wished i had that unit way back when.
point being, for live work, versus studio recording, you really need two rigs.
at one point, i had a 5 watt tube amp for recording, but pair it up with a larger head and cabinet for live work, and that was the best of both worlds.
Blackstar has some interesting low watt amps out right now, even down to 1 watt, that MIGHT be perfect for recording, and they are cheap.
the best low watt amp i've heard yet, for my tastes, that really sounds perfect for recording, is the
Suhr Corso.
but it is expensive ($999)
but no more expensive than the 1 watt
marshall special editions....
point is, there are a LOT Of good options out there now...
maybe look at the
Mesa TA-15it can go down to 7 watts, up to 25.
it has a top boost channel that is one of my all time favorite tones.