Fishman Presys Preamp

The Presys Onboard Preamp Systems are designed and built to offer maximum control, performance and quality in a small, unobtrusive format. With three models, the Presys, Presys+ and Presys Blend models, the compact sophisticated Presys system features Volume, Bass, Mid and Treble controls, a Phase switch, and a built-in tuner with LED display. Presys preamps also include a pre-wired Fishman Sonicore pickup for solder-free, plug and play installation, a low battery indicator, low profile control knobs and a unique pivot design for easy access to the battery compartment.

OEM-PSY-101 Presys with Sonicore pickup and endpin jack 
OEM-PSY-201 Presys+ with Sonicore pickup, anti-feedback control, brillance control and endpin jack
OEM-PSY-301 Presys Blend with Sonicore pickup, anti-feedback control, built-in mic with level control and endpin jack

down load install guide for PRO-PSY-101
http://www.fishman.com/products/view/presys-oem-1
down load install guide for PRO-PSY-201,
http://www.fishman.com/products/view/presys-oem-2
down load install guide for PRO-PSY-301
http://www.fishman.com/products/view/presys-blend-oem