| dont they already have a c trumpet with those in place i think it could be the 1510a.
i play on the kanstul 1500a which is the Bb version of what your talking about, and darker sound is the wrong word to use in my opinion, i'd say more focused sound would be a better description.i only have this horn a couple of months and really love the way it blows and feels.also it looks really cool too,especially in the brushed lacquer finish i got.
rob |