I don't know about redwood, but from my experience, Ash body guitars tend to sound quite bright with mids on the scooped side, sharp trebles (vs a more rounded treble on Mahogany, Alder and even Maple body guitars), and the bass tends to be tight with a good amount of attack and clarity. Ash is cool, but I prefer Maple body because it has that brightess, attack and tightness of Ash but with more mids, rounder/smoother trebles, and a more woody sound. I wish Maple was used more often for a body wood. My 1978 Gibson RD Standard has an all Maple body and it's one of my favorites! I don't know how to explain it, but Ash to me doesn't sound as woody as Mahogany or Maple if that makes sense. Maybe it has to do with the mids being less pronounced on Ash, but not sure exactly. That being said, I own 3 Ash body guitars (Mayones Regius, Skervesen Raptor, and an HSS Strat) and I really like all of them