The European 'D' model also has extra features (listed below) to set it apart from the standard American model

Body
Tiger Striped European Mountain Maple. Natural rubber linings in the wing and small bore of the boot joint. Choice of German (white ring) or French bell (metal ring).

Wood Options
Mountain Maple - the standard wood for Fox professional instruments
Red Maple - for noticeably increased resonance, and a wider harmonic range to the notes to produce a rounder, more complete, overall sound. Also, has an increased projection and improved clarity to the sound

Mechanism
Nickel silver key parts, hinges, and machined parts with silver plating. Full German system with high D and E keys. Rollers on F, A(flat), E(flat) & D(flat). Metal tubes extending into the bore in the finger holes of the wing and boot joints to prevent water from entering the tone holes. All spring posts are locked with screws.

'D' Model Extras
Rollers on right thumb B(flat), and F(sharp), in combination with a crowned E key. High A bridge to Whisper Key. D - Eb trill key. Body lock between long joint and wing joint. Alternative low C touch. Left hand whisper key lock. Balance Hanger (fitted).

Intonation
Each Bassoon is tuned individually to a modified just scale, with ample flexibility to accommodate the most demanding requirements. (The design is very flexible and may be used as high as A-443.)

Crooks
Numbers 2 and 3, Double Star CVX Bore.

Accessories
Deluxe round cornered case with case cover, neck strap, wooden handrest, one silk swab, seat strap.

Options
Right Hand Whisper Key Lock
Double High E & F Keys
Two Piece Long Joint
Thumb A(flat)/B(flat) Trill Key
Right and/or Left Thumb Rollers