Probably it's the notebook's speakers, but I find the rhythm guitar with a loss of bass/mass... but the lead is awesome!
Thx Emilio, yeah it's possible, I didn't go for the fattest of rhythms, I think if there would be a bass line it would work well. When I turn it up on my laptop, it sounds fat, maybe some EQ or compression would have helped. I went for a Marshall kind of flavour and usually there's not much bass with those, they crunch better with a tighter bottom.