This is a newer design from Miraphone. It's a large bell, large bore BBb tuba with a compact wrap. For that reason, it's called either a 4/4 or a 5/4 size tuba depending on whom you ask. So, it's a big large bore 4/4, or a compactly wrapped 5/4. You choose. Besides the large bore, the 5/4 proponents look at the large bottom bow and large bell throat which makes this a decent bit larger than a 4/4 186 tuba. This 191 has four or five rotary valves, a brass body with nickel leadpipe and bell kranz, and nickel trim. It is available in all gold brass as well. If you prefer a broader sound and a larger feeling horn that's still nimble, I think this is a big improvement over the 186 in slotting and tone. It's less brittle and more nimble than the 186, and it has the traditional fast Miraphone response but with less of a barking tone when you push the volume. This professional quality instrument has an amazing low range. If you have to play Prokofiev's Romeo and Juliet, this horn would be a great choice, as the low F simply roars out of the horn. The new valve linkages on this model are absolutely silent. No sound, no rattle, nada, nope, very quiet. This horn has a large 18.5" (470 mm) bell and a constant bore through the valves of .835" (21.2 mm). Includes attachments for lyre and carrying strap, and includes TU33 mouthpiece. Case is not included.
Included: Miraphone TU33 mouthpiece, case is sold separately