Here's a design I cooked up over at freestompboxes.org, consisting of a treble booster (in this case, the Runoffgroove Omega) driving Bajaman's amp simulation of the Vox AC-30 Normal channel. The idea is to replicate Brian May's favorite boost+amp arrangement in a 9V stompbox. The result, in my opinion, is a versatile distortion pedal that really does cop the Brian May tone.
The controls are:
(1) Range - controls the treble content of the treble boost
(2) Boost - adjusts the treble boost output
(3) Gain - adjusts the amp sim gain
(4) Tone - provides a treble cut control just like the AC-30
(5) Level - overall output level control
I've built this circuit already (so you can consider this verified) and I'm having a great time playing the solos in Bohemian Rhapsody
Check out all of the amp sims Bajaman has created with simple op amp stages. It's really amazing. I've breadboard a few of the designs and they all sound great (at least as good as some of the FET style amp sims we're familar with).
And I think Bajaman will be moving on to a Hiwatt amp sim soon. If so, I see a Pete Townsend pedal with a super fuzz + Hiwatt in a single box...
Hey MAO. I just finished boxing mine. It's reasonably quiet as long as you don't turn the boost up too much, and the Omega booster really does a great job cleaning up the wooly low end. You might also try Bajaman's vero for the AC-30TB at FSB, which would be a better one-to-one comparison with the Britannia. I plan to build that one too at some stage.