Carol Brass Tri-Key Professional Trumpet: Bb/G/F

2025 New Invention "CarolBrass Tri-KEY PRO®"

Tri-KEY PRO® is a new type of brass instrument featuring three (3) different natural keys.

When you unpack a brand new Tri-KEY PRO®, you will find it is in Bb key, in the Bb Mode.


When Tri-KEY PRO® is in Bb Mode, it is attached with a "Bb adapter".
The Bb adapter is with a tiny ring for which you can pull out the Bb adapter. 
You can see the "Bb adapter" between the bell tail and 1st tuning slide.


You will also discover a "G adapter" and a "F adapter" in the package of Tri-KEY PRO®


By switching the "adapter" and chaning the position of 1st, 2nd and 3rd tuning slides, you can turn the Bb Mode into G Mode or F Mode quickly.

The picture of G Mode:


F Mode

If you have additional questions, please send us an email!  

Prior to ordering please check our Shipping and Returns policy.

Also note weight indicated in the ad is shipping weight not actual weight of the items.