Michael Rath offers the R4 and R4F models with "in slide" tuning,
Ø 0.547" (13.90mm) bore
Rotax valve
Bell size Ø 8- 1/2" (215.90 mm)
Bell made of red brass
Outer slide made of bronze
Tuning slide of yellow brass
Leadpipe: 5
Clear lacquer varnish
Without mouthpiece and case
Two valve choices are available, both Swiss designed: the René Hagmann valve or the Willson Rotax valve. The Hagmann is free flowing and well balanced between open and closed operation. The Rotax has a more traditional feel, offering a little more resistance, preferred by many players.
Because of the modular construction of Michael Rath custom trombones you can remove the valve section and replace it with a detachable gooseneck, available as an option, creating a straight tenor trombone. Similarly, if you already own a “straight†R3 or R4, you can purchase just the F valve section to fit your instrument.