The Monopole Vintage Alto Saxophone Mouthpiece has a very distinctive character that often appeals to musicians seeking a sound steeped in history and personality. - Warm, round tone: Ideal for classical styles or jazz ballads, with a smooth, enveloping projection. - Fast response in the mid and high registers. - Centered sound: Not as bright as modern jazz mouthpieces, but with a clear definition that enhances articulation. Its marked number 2 , it work fine with hard reeds. I tried with La Vox Hard reed.