Maybe the piercing-ness is just what'll come with having a high A in the first place... when I talk of piercing I mean like how hard hit this sounds:
http://www.youtube.com/watch?v=ERbiT0xzLRYSkip to 1:11, rubbish video but it's the only place the whole songs already uploaded on/good example of high A screaming :D
I love his tone there, it'll be used for huge chords mainly though, crunch is gooood, I'm really a fan of 'biteyness' in pickups too.
Hey Nolly! What does dropping the output imply on the negative side of things then in context of tone? Obviously it's good for adding clarity but?..
I'm not very good at the technical sides of things unfortunatley but am learning as ever :)
*edit* listening to that again I guess it's quite a warm tone and the piercingness purley is how damn high it is.