the bass was designed and built by Michael Spalt, a real noble bass. Hybrid bass with double articulating armrest and strap extension. Neck-through design, 34" scale. Two-way truss rod. Body wings. Removable legrest of aluminum. All aluminum parts are hand-shaped and polished from T6-6061 aluminum billet. EMC pickup, switchable parallel/series, Sustainiac circuit. Noll TCMP-3 preamp, Dunlop Straplocks.The arm rest can be moved along its rotating axis as well as lifted or lowered along the body-center axis for maximum adjustability.The lower wing containing the electronics can also be moved for preferred placement of the controls. This has turned out to be a remarkable instrument with a clear punchy sound and great sustain (even without the Sustainer). The Sustainer adds a whole new dimension to what can be done with a bass!