Yamaha Professional model bass trombones have been created in cooperation with some of the world's greatest musicians. They play evenly and comfortably in all registers, and feature a warm yet commanding tone. The intonation and playability are superb for a truly 'state-of-the-art' bass trombone. The YBL-620G features a dark rich tone with powerful projection. The outer slide is nickel-silver for durability and the valves are in an offset configuration.

Features:

Gold brass bell – 9 1/2" diameter: Offers a warm sound with superior focus when compared to larger bells.

Double trigger: Thumb and forefinger setup is durable and identical to higher priced models.

Bracing: The large, easy-to-hold, nickel-silver bracing guards against possible slide damage if the instrument is dropped and also lessens fatigue while playing.

Slide lock: The unique slide lock design on all Yamaha trombones keeps the slide locked in place and keeps it from accidentally falling.

Inner slide: The chrome-plated inner slide is very durable and has a quick, sensitive response.

Outer slide: The one-piece, drawn, nickel-silver outer slide maintains an accurate diameter throughout its length, and this type of construction ensures airtightness, smooth action, and offers exceptional durability and improved response.

Inner slide stockings: Specially designed, one-piece, inner slide stockings guarantee airtight slide construction, and offer smoother slide action and better alignment, even in the extended 6th and 7th positions.

Tubular braces: Long-lasting nickel-silver tubular braces contribute to the stability of the slide and enhance smooth slide action.

Pressure formed tubing: Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance.

Laser-fused pluzuma welded bell: A high-energy laser fuses the brass together for a virtually seamless bell which allows continuous even vibrations.

Special mouthpipe: Yamaha trombones have mouthpipes featuring special acoustic designs allowing for precise intonation and greater blowing control.

Hand-lapped valves and tuning slides: Hand-lapping slides ensures an absolutely perfect fit and seal between the slide parts. Such a perfect fit helps to achieve smooth air flow and smooth action and improve the response and intonation of the instrument.

Rotary valves: The YBL-620G has two hand-lapped large rotary valves to ensure less resistance and quicker response in the "F" section.

For complete details refer to the Yamaha website.