G1 CUSTOM - The most open blowing, full-bodied tone with the most flexibility in the upper register. Standard on the current 82Z Custom saxes. Constructed from a sheet of "french style" brass.
G1 - Hydro formed version of Handmade Custom G1 (labled G1). It is a less expensive model standard on 62II and current Allegro models. The material is Japanese yellow brass made from a tube instead of a sheet. The sound is between the original 62 neck and the G1 Custom
G3 CUSTOM - Like the G1 with a bit more resistence, a warmer sound, and added upper register pitch control. Constructed from a tube of "French style" brass.
V1 CUSTOM - This model is close to the characteristics of the G1, with a more centered tone and added upper register control. Currently standard on the YAS-875EX. Constructed from a sheet of "French style" brass.
F1 CUSTOM - Provides more highs, projections and "punch". A more focused and free-blowing open feel (tenor and soprano only) Some people feel it has more flexibility in the upper register than the M1. Constructed from a sheet of "French style" brass. (Discontinued)
M1 CUSTOM - A nice focus with a well-defined and lively resonant tone, but with a bit smaller bore. Was available in alto or tenor only (original 875-type) Constructed from a sheet of "French style" brass. (Discontinued)
475 - (62 original) Annealed Japanese yellow brass. Known for an excellent, lively response and even intonation--installed now on the 475 model as a "Pro" feature. Constructed from a sheet of "French style" brass.
ADVANTAGE/23 MODELS/52 MODELS - This has excellent response and intonation, with a more straightforward (basic) tone than the Custom or Pro models. The material is Japanese yellow brass, made from a tube instead of a sheet.
FINISHES
GOLD-PLATED - More overtones/color to the sound and some people say darker. The process involves silver plating underneath the gold plating.
SILVER-PLATED - More clarity, quicker response and more highs for excellent projection.
UNLACQUERED - This has a lively, quick response with the least resistance and full spectrum harmonics. Some players feel less projection or focus. It supplies the most feedback to the player of all neck finishes.
BLACK LACQUERED - Dark, centered tone with some resistance.