KGUmusic Obsidian RB 135mm Trumpet

The KGUmusic Obsidian RB 135mm is a handcrafted instrument that redefines modern brass craftsmanship. Built entirely by a master artisan, this trumpet blends traditional German techniques with innovative materials to create a distinct sound tailored for jazz musicians and performers seeking a unique voice. At the same time, its wide bell and rich tonal palette make it a perfect choice for classical players looking for a broader, more expressive sound.

Materials & Sound

The Obsidian RB is crafted from a combination of brass and red brass, ensuring a warm, rich tone while maintaining exceptional clarity and projection.
Red brass components add warmth and depth to the sound, producing a smoother, more lyrical timbre.
The result is a balanced, expressive tone with excellent response—ideal for both jazz phrasing and classical performance.

Bell

Handcrafted using German techniques for acoustic precision and warmth.
One-piece red brass construction by master artisan Bernd Sandner.

Material: Red Brass
Diameter: 135 mm (5.3 inches)

The red brass bell delivers rich, warm resonance with excellent focus and projection, perfect for nuanced and dynamic playing.

Leadpipe

Crafted from red brass for tonal consistency and expressive projection.
Its carefully shaped design supports smooth airflow and improved intonation stability.

Tuning Slides

Made from red brass to preserve resonance and tonal integrity.
Rounded shape ensures minimal resistance and natural response.
Reverse design enhances airflow and ease of playing, even during fast or extended passages.

Design & Customization

A bold and elegant aesthetic makes the Obsidian RB a visually stunning instrument:

• Obsidian finger rings, adding a distinctive and refined touch.

• Heavy Trim Kit for greater stability and deeper resonance.

• Natural obsidian stone inlays, offering unique handcrafted character.

• Patina finish, giving the trumpet a vintage, time-worn look.

• Glossy transparent lacquer to protect and preserve the surface.

Designed for Every Musician

Whether you're a developing student or a seasoned professional seeking an instrument with personality, the Obsidian RB enhances every performance with its dynamic response, warm tone, and unique craftsmanship.

Customization Options

Looking to make it truly yours? We offer custom engraving and design modifications to bring your personal vision to life. A custom Obsidian RB isn’t just an instrument—it’s a statement piece and a memorable gift for any dedicated musician.

KGUmusic Obsidian RB – Let Your Sound Stand Apart.