Daily Archives: October 15, 2009

Boss NF-1 Noise Gate

NF-1 Noise Gate (Boss)

This is a simple noise reduction unit, the first one in Boss compact pedals line-up, and can be used to get rid of background noise and hum during silent passges while playing.

It has been sold from 1979 to 1988, while right now the only compact noise-reduction system is the NS-2.

The NF-1 has two controls: Sens and Decay. Sens (for Sensitivity) sets the threshold for intervention, while Decay sets the intervention time after last signal, from 100 msec to 1.6 seconds.


- Input Impedance: 470 kOhm

- Recommended Load Impedance: 10 kOhm or higher

- Current Draw: 3.9 mA

Schematics for the NF-1 can be found here:

NF-1 Schematic (Free Info Society)

NF-1 Schematic (Schematic Heaven)