Posted by Rob W. on February 24, 2004 at 23:02:38:
In Reply to: MF-4 for Eb tuba posted by The Impaler on February 24, 2004 at 16:31:18:
I use both the MF2 and MF4 with my Willson 3400 Eb and love the response and tone.  I use the MF2 for large groups because it provides a biger tone expecally below the staff.  I use the MF4 for brass quintet and solo work.  It is more flexable and has a clearer high end.  Both mouthpices have the same bowl diameter and rim.  Thus allowing for easy switching for us seasoned player.
Rob W. <><