Features of the Yamaha YSL 671 Series Alto Trombones
The Slide

Inner slide is chrome-plated nickel-silver, drawn inner slide is very durable and has a quick, sensitive response. The outer one-piece, drawn, nickel silver outer slide maintains an accurate diameter throughout its length and this type of construction ensures, airtightness, smooth action, exceptional durability, and adds resonance to the sound. The 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.

The Bell

The hand-hammered one-piece bell has an axial (lengthwise) seam, making it a continuous extension of the instrument's material. This results in pure, uniform resonance and superior tone. A hammered bell produces a slightly more broad and rich, yet perfectly-balanced tone with quick response and extra presence due to advanced manufacturing techniques.

Hand-lapped tuning slide

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.

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.

Slide lock

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


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


Yamaha trombones have leadpipes featuring special acoustic designs allowing for precise intonation and greater blowing control.

Key Eb
Bore Graduated bore .470"- .490"
Bell One piece 7-3/8" yellow brass bell
Slide The inner slide of the YSL-671 is chrome-plated nickel-silver. The outer slide of the YSL-671 is yellow brass. Gold brass leadpipe: Gold brass is extremely resistant to wear and corrosion, and when used in a leadpipe, it ensures long-term precision.
Valve System Traditional rotor system for the 12 step trill valve.

Standard Features

Clear smooth sound
Comes with hard case
48A mouthpiece included
Medium shank leadpipe