Experiment: very quiet amps vs LOUD amps (20, 50 and 100w)

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I wanted to do a little experiment. When talking about tube amps, you will very often hear people say things like "crank that baby up and it will sound much better!" or "get those tubes cookin' and it will really open up!" etc. Now, there are a couple of factors that come in to play here. A big one is the fletcher munson curve obviously, this has a big impact on how we as humans perceive change in sound at different levels. Another factor might be speaker breakup but of course powertube saturation and compression is a big thing here.

So, I took three tube amps, a 20w Marshall SC20H, an 50w Orange Rockerverb 50 MKIII and a 100w Mesa Boogie Dual Rectifier Solo Head and I recorded them both at quiet and loud levels so we could compare the tones and see which of the tones sounds better to our ears. Do these amps really sound bad at bedroom levels or is that just a myth, and do they sound much better when cranked or is that also a myth?

I wanted to take the fletcher munson curve and speaker breakup out of the equation so we can really hear how our tube amps react to different volumes. I find the results interesting. Not "brand new information" altogether but a good way to get some fresh perspective on this topic. I hope you find it useful as well:

 
Awesome video! There is an obvious difference here. More preamp gain which is fizzier at lower volume and then the tone rounds off and compresses slightly. Just more pleasing overall. Noticed it less with the Mesa though. Both very usable tones though.

I never really looked into Orange but that amp sounds great.
 
I have also found there to be a “sweet” spot with the master volume as well. It’s always loud lol, but not necessarily as loud as the amp will go either. Even the modern amps using mostly preamp distortion for their tone seem to benefit from cooking a bit.
 
I have also found there to be a “sweet” spot with the master volume as well. It’s always loud lol, but not necessarily as loud as the amp will go either. Even the modern amps using mostly preamp distortion for their tone seem to benefit from cooking a bit.

Agree, everything to 10 I don't like either.. for a lot of MV amps, the sweet spot seems to be between 4-7
 
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