I get why some previous posts mention the Traynor sound being muddy or not liking how the mids are handled in the old YBA amps . It helped me to remember the tone stack on Traynor tube amps is passive Fender-style and not like Ampeg's Baxandell based scheme. When I had the YBA1A and the V4B at the same time , the active mid-range control on the Ampeg really bested the 4 knobs on the Traynor. But with the newer YBA200 , there seems to be a lot more tonal variation than on the vintage "range expanders ". I like both Ampeg sound and Fender sound ; different horses for different courses.......