Trying Out the Theory Sax Mouthpiece by Theo Wanne x Sound House Collab!

Have you heard of Theo Wanne?
Theo Wanne is a leading figure in the world of mouthpiece refacing, trusted by countless musicians for over 20 years. His expertise has been further refined through extensive research into vintage mouthpieces, and he has released his own line of mouthpieces infused with his unique knowledge and experience.
His mouthpieces are especially popular among jazz players and he has many fans in Japan, which leads to his frequent visits here.
Now, we’re excited to announce the release of a new mouthpiece called “Theory” that was developed as an original Sound House model, and it’s specifically recommended for classical and concert band players!

Let me introduce the details of the Theory mouthpiece.
The biggest highlight of the Theory mouthpiece is, without a doubt, its price!
Even the more affordable models from Theo Wanne typically start at over ¥30,000, with many high-end models exceeding ¥100,000.
However, this collaboration model was created with the hope that even junior high and high school students could use it — and it’s available for just ¥19,800 (tax included)!
We worked hard to keep the price under ¥20,000.
Note: Price listed as of April 2025.

What sets this apart from typical Theo Wanne mouthpieces is, first and foremost, the material.
To keep the cost down, it uses a special resin with a density and weight similar to hard rubber. There's also only one model available and the packaging has been simplified to reduce costs further.

The tip opening is 1.55mm, which is a standard size, so it works well with reeds ranging from 2 1/2 to 3 1/2.
While some parts of the manufacturing process are handled by machines, the critical finishing touches are done by hand.
You can clearly see the amount of care that went into the finishing, especially around the table and side rails, which are smoothly and precisely crafted.

Looking at the baffle and backbore, my first impression was that it resembled the Selmer S80. But, once I actually played it, it felt more similar to the S90 or Concept models.
It's easy to adjust pitch, and I found it very controllable even for beginners.
Since it plays consistently from low to high registers, I think this is a mouthpiece that truly allows anyone to experience the joy of playing. It really feels like a mouthpiece designed for modern concert band settings.

As for ligatures, mouthpieces from other brands can be used without any issues. While metal ligatures also pair well with it, the fit can be a little tight — so I think using something like BG’s L12 or L12SR provides more flexibility and a softer tone overall.

TTheory is definitely a must-try for concert band musicians!
I'll be using this mouthpiece myself for upcoming concerts and competitions(^^♪