Professional alto B flat trombone built for grading and professional performance, offering balanced ergonomics, reliable response, and clear projection. Key benefits Balanced playing and reduced fatigue: the counterweight provides even weight distribution for extra comfort during long practice sessions and performances. Smooth, responsive slide action: a fine inner draw tube with good sealing and wear resistance enables fluid transitions between notes and effortless articulation. Consistent pitch and rich timbre: carefully matched alloy composition and precise manufacturing deliver very good pitch stability, a wide warm sound, and strong penetration and expressiveness. Durable finish and components: lacquer gold surface treatment and a nickel plated spring drain valve provide wear resistance, hardness, and lasting appearance without affecting tube vibration. Materials and construction Body material: thickened brass alloy with copper, zinc, tin, and nickel in balanced ratios for stable vibration and uniform response. External draw tube: instrumentspecific brass tube for reliable fit and consistent slide performance. Bell mouth: instrumentspecific brass tube tuned for clear projection and a rich tonal core. Inner draw tube size: 12.7 mm. Bell diameter: 203 mm. Color: silver. Surface treatment: lacquer gold. Drain valve: nickel plated spring drain valve, hardness, not easy to fade, durable. Performance characteristics Very good pitch accuracy and timbre with strong penetration and expressive capability. Responsive attack and wide, warm tone suitable for ensemble and solo contexts. Smooth glide action ensures fluid note transitions for both beginners and advanced players. production technology yields a low and powerful sound with rich brilliance and musical expressiveness. Suitable applications Grading and examinations where accurate intonation and reliable response are required. Professional performance in concert band, orchestra, or solo recitals needing clear projection and tonal presence. Extended practice sessions and rehearsals, thanks to the counterweight and durable components that reduce player fatigue. What you can expect A sturdy, durable instrument that produces a responsive attack and full sound. craftsmanship that supports bright, clear tone across registers. Components and finish designed to withstand regular use while maintaining performance characteristics. Specifications Tonality: alto B flat tune Inner tube diameter: 12.7 mm Bell diameter: 203 mm External draw tube: instrumentspecific brass tube Bell mouth: instrumentspecific brass tube Surface treatment: lacquer gold Color: silver Drain valve: nickel plated spring drain valve This trombone is suitable for students preparing for graded exams as well as professional musicians seeking a reliable, expressive instrument for performance and practice.