The company and Larry Fishman is considered a giant among acoustic pickup systems and preamps. These pickup/preamp systems have their own sound pattern with high recognition value, which can be found on board numerous high-quality guitars and shaped many a famous recording.
Fishman's Matrix Piezo pickup in the narrow version has a width of 2.3mm and is supplied individually. Recommended preamps to match include Fishman Infinity respectively Matrix models.
Features:
Single piezo pickup Width: 2.3mm Narrow Usable with Fishman Infinity and Natural
L.R.Baggs Pickup HiFi Bridge Plate
L.R.Baggs EAS Element Active System 
Gretsch Deltoluxe Acoustic Soundhole Pickup