i use a weber mass lite, on my vintage mesa boogie mark2b.
i've been using it for about 5 years now, works great.
i can find the sweet spot of the amp (which for me, is right between the preamp-side gain capability, and the power amp-side of saturation)...
then I control the actual volume that i monitor that sound at. it is infinitely variable, with my setup.
using ATTENUATORS is a bit of a voodoo science...
and not something i'd just dive into if i were you, unless you knew ALOT about gain structure in tube amps, and also a very intimate knowledge of exactly WHERE the sweet spots exist on your particular amp.
every amp has a sweet spot.
mine has exactly 4.
LOL
point is, some amps respond well to this, some don't.
i can get 'HIGH GAIN' tones and grind out of my amp very easily, but i do not like those tones.
i tend to go for something a little more pure, i look for natural drive from the amp for touch sensitivity, and THEN boost with pedals, for a hotter signal, but not much more.
there are wonderful stomp boxes out there that approximate HIGH GAIN tones very easily....
but if you are a purist, you will want to find your signature tone using an amp, and get MOST of your tone with just that....
then augment that with other minor tweaks, just to dial in exactly what you are looking for.
i can think of very few guitar players that i really dig, that get their tones with just a guitar and amp.
it is the science of electronics that drives you to try combinations of things to find 'just the right tone'.
if you are not naturally a HIGH GAIN type player, you'll find that a high gain setup will feel unnatural to you.
me, i think sheer volume is more potent, than gain.
for me, i know it is.
but you can't always crank that way......
i also find a lot of HIGH GAIN amplifiers, sound anemic and weak when playing at bedroom volumes....
for recording, that's no good.
you'd be better off finding a very low wattage, but well-executed amp design for gain.
there are a plethora of wonderful low wattage, high gain designs out there.
unless you need a large setup for live work, a small amp in the one watt to 15 watts is plenty for recording.