From the manufacturer:
Joe Satriani is continually refining and sharpening his sound. Two years in the making, the Satch Track™ Neck is Joe’s first single-coil size signature pickup. Articulate, vocal and musical, it is our most advanced Fast Track-style pickup to date.
The Satch Track™ Neck bridges the gap between classic humbucker and single-coil performance. It tracks pick attack and string vibration quickly and accurately like a single-coil, but the voicing is wider and stronger, like a humbucker. The highs are very warm, and clarity is created by keeping the mids and lows tight and focused.
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