Carbon fiber trombones

Lemondrop, a .500 bore commercial/jazz horn modeled after Rosolino’s 6h

Lemondrop, A .500 bore instrument.
Total weight is 1.5 lbs.

The starting price is $3,050




JJ, a .508 bore commercial/jazz horn. A tribute to the great JJ Johnson

A .508 bore horn for those that prefer a little darker and bigger horn.

Total weight is 1.5 lbs.

The starting price is $3,050












C10 .547 bore trombone

Coming soon!!! The C10, our .547 bore symphonic model large bore tenor. It will feature: A carbon fiber 8.5 inch bell, tuning slide, f slide and hand slide. Instrument innovations rotary valve. Our newly designed “Speedyflo” water key. A curved hand brace for comfort. An all up weight of around 2.5 pounds.

Options will include: A two piece bell with aluminum threaded bell rings. Straight gooseneck. (interchangeable with valve section) Choice of matte or high gloss carbon finish.

The starting price will be posted soon











Butler trombone design

  • We start by using computer technology to 3D model our designs.
  • Precise aluminum molds are made using CNC computer aided cutting machines. This insures that all of our horns play as much alike as possible.
  • Our bells are made using pre-preg carbon fiber, the same material used for aerospace parts, to insure that the perfect amount of carbon fibers are blended with epoxy resin to create the best strength to weight structures that are acoustically close to perfect in shape and wall thickness.
  • All carbon fiber parts are hand laid up to insure all weaves are aligned for the best acoustical qualities.
  • All of our horns are hand built and tested by real trombone players before they are shipped to the customer.

Innovative features:

Butler water key
Butler water key
Speedyflo waterkey

Butler Speedyflo © water key has a very large opening to allow for quick release of moisture. It does not change the flow of air through the tube as there is no “dimple” on the inside of the tube. It uses an O ring to seal the opening and has a curved shaped plunger that matches the inside wall of the tube. In addition it uses a compression spring for much longer spring life.

A Saturn water key is also an option

Press on the ring in any direction (any hand) to dislodge the stainless steel helical sprung ball from its airtight seating. Virtually clear route from instrument to floor. Release ring and the stainless steel ball returns to its seating once again to make an air-tight seal.


All carbon fiber outer slide

The outer slide is all carbon fiber including the crook and brace. This makes for an incredibly lightweight slide, unlike anything that has every been created. The outer slide weighs less than half of a Pbone slide. It’s just like playing “air” trombone!!

The hand brace

The hand brace is made of Nickel Silver and is designed like the Williams style hand brace with a curved tube and is very comfortable.  Almost all the weight of the horn is centered with the hand brace as both ends are extremely lightweight.

Modular bell section

The bell section is modular for ease of cleaning and the possibility of interchangeable bells. The gooseneck uses standard Bach style threaded connectors.

Interchangeable lead pipes

Our horn uses a threaded cork barrel. (one standard 6h style lead pipe is included). You may have the option a leadpipe of your choice and we are happy to give you our recommendations.


Jim McLaughlin, lead trombone with the Houston Jazz Orchestra.

I have tried every trombone available over the past 40 years, and nothing has impressed me enough to make a change from the TR4501 Urbie Green model Martin that I purchased new in 1978. It has served me perfectly for everything that I do, which primarily is playing lead in a big band, top-40 cover bands, Broadway shows, and the occasional trio/quartet gig. The TR4501 is a light-weight .500 bore trombone based on the Martin Committee model, with modifications by Urbie (curved hand brace, nickel outer slides, short tuning slide).

I have been following Dave Butler’s development of the carbon fiber trombone over the years. I talked with two people who finally tried the horn at the TMEA conference in 2017, both of whom said it was great, but would take some getting used to. When I was in Dallas in March 2018, I called Dave and made an appointment to try his new horn. I’m not sure what the others were referring to by saying it would take some “getting used to” because after playing the horn for 90 seconds, I knew I had to have this trombone. When I received my new horn serial # 0008, I weighed it on a postage scale. It is 1.5 lbs. without the mouthpiece. My TR4501 is 3.0 lbs. (and it is a light-weight model).

The Butler Trombone is without equal, it is truly a stunning trombone. Aside from its obvious light weight and the fact that you cannot dent this horn, the playing characteristics are perfect. The partials above middle C are laser accurate…no more “splee-yahs” bouncing around between G and high C when blowing full force. The horn has a perfect high E natural…you know, the note that they leave out at the factory. The light weight of the slide truly enables you to perfect slide vibratos, whether it be the fast Dorsey style vibrato or the slightly slower and wider Dick Nash or Urbie Green styles, you can truly lock them in with little to no effort. It is remarkable to touch the bell with your finger while playing the horn and feel how much the bell vibrates.

This is as effortless to play as a horn can be. This horn is without equal and exactly what any professional musician could want in a custom made instrument. This instrument IS for everybody, and not just the discriminating professional. Look no further, it will be at least another 40 years before something like this will break the paradigm again. See me playing this horn on YouTube: Houston Jazz Orchestra


David Jackson
“Oh yeah buddy. Those are some beautiful trombones. Thanks Dave for getting it done so fast.”


Carl Poposki
“It’s a GREAT horn. Open, free blowing, resonant, slots very well.”
Hear Carl’s new album on Apple music: