Legendary Chicago Symphony tubist Arnold Jacobs was known as a master teacher and phenomenal musician.  His sound was described as having a very vibrant core, tonal beauty, and a wide range of dynamics.  In order to help the modern tuba player achieve the beauty of Arnold Jacobs' sound, the Canadian Brass has designed the Arnold Jacobs Heritage Tuba Mouthpiece with the following characteristics:

Dark, organ-like character

Clearly defined tonal core
Quick and even response
Highly efficient low register
Singing and stable high register
 
Specifications:
Inner diameter:  32.7mm/1.29in
Cup:  deep and pear shaped
Rim:  narrow with clearly defined inner edge
Throat:  8.5mm/0.33in