Model 120 Piano Sensor System

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Product Overview

The Helpinstill Model 120 is designed for use with any size Grand Piano. Covers the entire range of the piano keyboard in three regions to insure uniform volume from every note. Our standard passive control box allows simple adjustments to the volumes of each section of the keyboard, and provides both a mic-level mono output via the XLR connector, and an instrument-level high-impedance mono output via a 1/4" phone jack. Installs in minutes without tools or harm to the piano.


  • 3 Sensors in lengths of 24", 16" and 14"
  • 1 Gold Double Support Bar
  • 2 Silver Underbars with adjustable pedestals
  • Control Box
  • Screwdriver for adjustment of pedestals
  • Owners Manual

Owner's Manual

Warranty Information

Lifetime Warranty