Bostonbean, I think with the BAT Rex preamp, you can have the best of both classical music and (gulp!) rock. Put a Sovtek or EH gold pin 6H30 in the switched position within the power module. The 6C45 provides great detail, depth, and extension. The 6H30 takes away some depth and detail in favor of midrange texture and harmonies.
This is one of the biggest reasons I am sticking with BAT Rex. Rolling tubes on the fly with a switch allows one to get the best of both worlds.
This is one of the biggest reasons I am sticking with BAT Rex. Rolling tubes on the fly with a switch allows one to get the best of both worlds.