Trumpet Mouthpiece Blackburn 3C, Tested, Excellent Condition, Rare in Japan This is the well-known Blackburn medium-heavy 3C. It didn't suit me, so I'm selling this one, which has only been tested. To put it simply, it's good for those who want a more focused and cohesive sound than a Bach 3C. It's great for those who like a targeted playing style. It projects well. No box included. Please note that I will not be offering a discount. Thank you for your interest. Please see below for details. ↓ Engraving: BLACKBURN SONARE 3C 116g medium-heavy model. Popular mouthpiece among orchestra players. The inner rim diameter is slightly smaller than a Bach 3C. The rim is flatter and thicker than a Bach 3C. The outer rim diameter feels like a Bach 1C. The mouthpiece is soft on the lips, making it comfortable even with hard pressing and less tiring. The inner edge of the rim is scooped, preventing the lips from touching the cup wall, which reduces fatigue. The bowl-shaped cup is slightly deeper than a Bach C. The throat is #28 (3.57mm). The backbore is similar to a Warburton 8. The sound doesn't diffuse at the receiver and projects well from the bell. It produces a very rich and deep sound. This mouthpiece has excellent response and resonance. It's easy to control from low to high registers, making it recommended for those who find Bach mouthpieces too difficult.