How does it differ from a 60? The rim shape on the inner bite is the same as the GP, as is the overall cup depth and shape. The throat is also the same size as on the GP. As with the GP, the upper register is clean, clear and very trombone-like. The lower register still pops and maintains a good resonant sound that the GP is known for. The GP6 may be the solution you're looking for or another step towards the mouthpiece straight jacket.
• Cup diameter: 29.02mm (1.1425 inch)
• Throat: 7.77mm (0.306 inch)
• Rim: 39.497mm (1.555 inch)
• Light weight blank
• Gold plated