This is a guitar effect device that uses BOSS's COSM (Composite Object Sound Modeling) technology to digitally simulate the classic Fender® BASSMAN® amp
The BOSS FBM-1 is a pedal designed to reproduce the vintage sound of the Fender BASSMAN amplifier using Roland's COSM (Composite Object Sound Modeling) technology. It features a BRIGHT input jack to emulate the original amp's input characteristics and includes controls for Presence, Middle, Bass, Treble, Level, and Gain.
| Power Supply | 9V DC/200 mA |
|---|---|
| Technology | COSM |
It shows whether the effect is on or off, and also serves as a battery check indicator.
The guitar amp should be turned on last when powering up the system.