The Michael Rath mouthpiece range was introduced in 2004 after extensive research, development and testing. Our goal was a very simple one - to create a range of mouthpieces that not only would perfectly complement our own instruments, but also would be excellent mouthpieces in their own right.
All Rath mouthpieces have had substantial input from professional players in their design and many of our models are “Signature” mouthpieces, designed in collaboration with Rath trombones artists such as Mark Nightingale, Mark Frost, Bert Boeren, Marc Godfroid, Mike Dease and Brett Baker.
Rath mouthpieces feature a semi heavy outer shape, designed to bring the beneficial features of heavy weight mouthpieces, such as added projection and core to the sound, without reducing the feedback to the player, as can be the case with heavy weight designs.
I purchased the Kanstul contrabass with a Rath CB1 and was very pleased with it. But it seemed time to push the lower envelope and move to a larger mouthpiece. During this COVID situation, purchase without trial is a risk, but the CB1 already shows this will be a good mouthpiece. True enough, the lower end (pedal B natural) is well supported. Pushing the upper register also reminds one to never make the mouthpiece do your work for you.
Comparing the CB0 with the CB1 is most likely a personal choice, but I found the CB0 to step out of my way and let the lowest range sing forth.