Alvar Standards - H-Expander All Hagstrom electric guitars and basses include our patented H-Expander™ truss rod. Providing tension at both ends and running the entire length of the neck, the rigid yet light-weight alloy truss rod allows for a very low action and thin neck, two factors that were instrumental in earning Hagstrom its reputation as the world’s fastest playing guitar. The H-Expander™ truss rod not only provides ultimate neck stability, but it also contributes to Hagstrom’s unique tone. Longer sustain and a round attack are some of the sonic characteristics the H-Expander™ adds to the tonal essence of Hagstrom. Machine Heads Hagstrom models use 18:1 or 15:1 gear ratio machine heads based on our own designs to insure accurate tuning. Viking® and HB series basses feature machine heads with a 17:1 gear ratio. Resinator Wood Resinator™ wood is a wood composite material that is both more uniform in density and more stable than any standard wood product. These characteristics eliminate dead spots or “wolf tones” sometimes associated with conventional wood fingerboards. Resinator™ wood has an articulate sound similar to high quality ebony, but without any of the problems associated with ebony. It provides a stable and clear tone, and also adds higher overtones and harmonics which uniquely detail each note. Like our H-Expander™ truss rod, Resinator™ wood is a major contributor to the distinctive “Hagstrom tone”. Set Neck Hagstrom uses a variety of different neck joints throughout our range. Our set-neck recipe is the classic and time-tested Mortise and Tenon joint, a design that most efficiently transfers string energy from neck to body, and can often only be found on more expensive custom-built guitars. A team of experienced and dedicated craftsmen hand carves every neck joint, insuring perfect execution of this traditional technique preferred by luthiers for generations.