I had a square chamber mouthpiece 1.80mm, this arived and I tried to play it. C-D was harder, the lowest note tricky and the tone thin. The next day I tried a Versa X ligature and harder 2.5 Vandoren reeds, the sound was round and large with a clean response and excellent tuning. It is pefectly made compared to stinking ebonite mouthpieces. This feels like a good Meyer with a more modern tone. It is low profile in the mouth and fits tightly on the cork. I would give it 5 for sound based on the Versa-X setup with Vandoren 2.5 reeds - it is alive with vibration. A very enjoyable and fun mouthpiece that will last a long time, made from advanced material.