The John Packer JP039 is a slide trumpet (also called a soprano trombone) that gives your child an easier entry into the trombone family or adds versatility to their trumpet playing—all at a price that won’t have you second-guessing your decision. This compact, lightweight instrument is perfect for students with smaller hands who want to learn trombone technique, or for trumpet players looking to add jazz slides and glisses to their performances. Built from durable yellow brass with a smooth-operating slide, the JP039 holds up to daily practice and performance use. It’s covered by a comprehensive 2-year warranty against manufacturing defects, so you can focus on helping your child make music instead of worrying about repair costs.
What makes the JP039 special is its versatility. For young trombone students, it’s a perfect first step—the compact size means kids with smaller hands can actually reach all the slide positions comfortably, something that’s tough on a full-size tenor trombone. Band directors appreciate having these in their programs because they let younger students start learning slide technique without the physical strain of holding a larger instrument. One parent shared that their 16-year-old “loves his new soprano trombone,” and customers consistently mention how well-engineered and lightweight it feels to play.
The JP039 also appeals to trumpet players who want to explore jazz styles or expand their musical palette. The slide mechanism allows for smooth glissandos—those sliding, swooping sounds you hear in jazz solos—that simply aren’t possible on a valved trumpet. It’s pitched in the same range as a Bb trumpet, so trumpet players can pick it up and start making music right away without learning a completely new fingering system. The slide is swift and silent, as one reviewer noted, making a great sound that holds its own in trombone quartets or jazz ensembles.
Built from quality yellow brass with a 4.75″ bell, the JP039 delivers a warm, resonant tone that doesn’t sound cheap or tinny. Teachers value John Packer instruments because they’re reliably constructed—this isn’t a throwaway novelty instrument, but a serious piece of gear that’s built to last through years of use. The slide operates smoothly, which matters more than you might think when you’re learning proper slide positions and intonation. A poorly made slide can stick or feel rough, making practice frustrating instead of fun.
The JP039 arrives complete with everything needed to start playing: a high-quality lightweight case with backpack straps and shoulder strap for easy carrying, a JP601 mouthpiece, and a maintenance guide to help keep the instrument in top condition. The case includes a small exterior storage pocket for accessories and sheet music, making it practical for students heading to lessons or rehearsals. Whether your child is exploring the trombone family or adding a unique voice to their trumpet playing, the JP039 makes it accessible and affordable.

