Cerveny almost invented the tuba and they have perfected it over the past 180 years or so. This is another fine example of their work and the excellent craftsmanship. These horns have great sound color.
The "S" version does not have the nickel-silver tuning slides and brace tubes. These are just polished and lacquered brass. This lack of nickel-silver trim gives it a darker sound. Heavier brass and valves make it one of the best tubas on the market for the money invested. Miraphone, quality throughout the line of instruments.