Im sure this is question has been asked a million times

[jimbob]

What is that typical Queen solo sound? LIke during  "we will rock you" Its got this up-octave type thing going. I hate to ask this question as im sure everyone else has.sorry and thanks.- btw- i know it cant just be distortion and brian may treble boost.

[mlabbee]

1.  Guitar with REALLY complicated wiring
2.  Some kind of treble boost
3.  Crappy little homemade amp with a 6z9 car stereo speaker
4.  God knows what else . . . apparently for live performances he had something like 30 Vox AC-30s stacked up behind him with custom wiring to enhance the sound

www.brianmaycentral.com has a ton of info
see here, too: http://www.treblebooster.com/brian_may_treble_booster.htm

There's a cottage industry built around reproducing his sound . . .

[davebungo]

For the millionth time, I'm fed up of answering this one...sorry only joking!

I think the octave up thing with Brian May is more likely to be one of his typical multi-tracked solos rather than a given effect as such although I'm sure you could come respectably close with an Octave up effect (good enough for live use for example)

[squidsquad]

Ya may wanna take a look at this if you haven't already:
http://www.runoffgroove.com/mayqueen.html
As for the end of WE WILL ROCK YOU...
I think he was playin his A cord up on the 14th fret...a *real* octave!

[Hal]

its a lot of compression.  I hate to say it, but that was one sound that the cyber twin actually does really well.  Obviously, trebble boost too.

[Arno van der Heijden]

I'm pretty sure there's no octave up on we will rock you. It's pretty much: guitar, middle+bridge in series (similar to bridge HB) --> treble booster --> AC30 normal channel.

The octave up thing you're problably referring to is just the A/D progression played an octave higher (14th fret).