I am interested in gaining a better understanding of the pros and cons of the pre- and post-1974 Besson New Standard euphoniums (pre-Sovereign era) - specifically how each affects the quality of sound produced.
For the sake of this discussion, presume the player is using either a Denis Wick 4AM or 4AL mouthpiece as applicable.
The first is that of the euro shank (pre-1974) vs. the large shank (1974 and later).
The second is that of bell up vs bell front configurations.
Thank you in advance for sharing your experiences and opinions.
David