John Packer JP333 Rath Bb/F/Gb Bass Trombone

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  • Key Bb/F
JP333 RATH Trombone Lacqur CUTOUT

John Packer JP333 Rath Bb/F/Gb Bass Trombone

Code: 102721

The JP333 Rath is John Packer's Double Valve Bass Trombone and is suitable for musicians who are looking for a mid range/pro level instrument perfectly suited to orchestral playing, in a brass band section and also in a trombone section in a big band.

The JP333 Bass Trombone has a broad and free sound, developed in collaboration with UK trombone guru Michael Rath. This JP Rath design combines a double in-line rotary valve with a modern open wrap style.

The development of the JP333 Rath saw the instrument finely balanced, with the help of the counterweight, to ensure an excellent playing experience for musicians of all levels

Unique benefits

The JP333 Rath features a large  14.27mm (.562") bore and a 241mm (9.5") bell and is constructed from high grade brass throughout.

The instrument also features an exclusive Michael Rath design leadpipe which supports flexibility throughout the whole register. An extremely high level of craftsmanship is apparent throughout, as is to be expected with instruments that bare the Rath seal of approval.

Product benefits


  • Model: JP333 Rath
  • Key: Bb/F/Gb
  • Bell Size: High Grade Brass 241mm (9.5")
  • Valves: Rotary 2
  • Bore: Large 14.27mm (.562")
  • Water Key: Lever 1
  • Body: High Grade Brass
  • Finish: Lacquer
  • Lyre Box: No
  • Mouthpiece: Yes
  • Leadpipe: MIchael Rath Leadpipe
  • Instrument Weight: 2.62Kg (5lb 12oz)
  • Weight with case: 7.7Kg (16lb 15oz)
  • Box Dimensions: 96x34x36cm (38x13x14in)
  • Boxed weight: 9.9Kg (21lb 13oz)


JP333 RATH Bb/F Bass Trombone

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The JP333Rath Bass Trombone has met my expectations as a performing bass trombone player. The Rath Designed rotors are quick and responsive and the playability is second to none. It produces a rich, dark sound, but when you need it to pop, it will do that too. Honestly, it's comparable, if not better than other bass trombones in the marketplace that have double the price tag.

Great for doublers

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I'm a tenor player most of the time but when the gig calls for the low notes you gotta do what you gotta do. I needed a bass that would keep up but not break the bank. This horn has been great for me. I have no problems blending into a section or giving it that bass edge that is needed sometimes. For a horn that costs significantly less than the usual suspects, it gets the job done really well. If you're looking for a Bass to complement your arsenal its tough to go wrong with the 333

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Supplied with

The JP333 Rath Trombone is supplied with a JP mouthpiece, JP pro lightweight case and an Ultra-pure Maintenance Pack.

The case is well designed to be robust yet lightweight and to provide as much protection to your instrument as possible.

It is equipped with backpack straps and a comfortable should strap as standard and also includes a small storage pocket accessible from the outside suitable for storing small accessories and sheet music.

Product supplied