Boss GM-800 User Manual

Quick Start
Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rear Panel (Connecting the Equipment) . . . . . . . . . . . . . . . . . 2
Getting Ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Getting Your Guitar/Bass Ready . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connecting the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Turning the Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifying the Device Connected to OUTPUT Jacks
(OUTPUT SELECT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Making Pickup Settings (GK SETTING) . . . . . . . . . . . . . . . . . . . 5
Adjusting the Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Using the Tuner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selecting a Scene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
About the Play Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
USING THE UNIT SAFELY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Main Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
© 2023 Roland Corporation
Before using this unit, carefully read “USING THE UNIT SAFELY” and
“IMPORTANT NOTES” (the leaet “USING THE UNIT SAFELY” and
Quick Start ( p. 7)).After reading, keep the document(s) where it will
be available for immediate reference.
Quick Start (this document)
Read this rst. It explains the basic things you need to know in order to use the GM-800.
PDF Manual (download from the Web)
¹ Reference Manual
This provides even more details on the functions and operations
of this unit.
¹ Parameter Guide
This explains all parameters of the GM-800.
¹ Sound List
This is a list of the sounds built into the GM-800.
¹ MIDI Implementation
This is detailed information about MIDI messages.
To obtain the PDF manual
1. Enter the following URL in your computer.
https://roland.cm/boss_om
É
2. Choose “GM-800” as the
product name.

Boss GM-800 Specifications

General

Power Supply	AC Adapter
Sound Generator	ZEN-Core
Effects	Multi-effects, EQ, Delay, Reverb
Display	128 x 64 dots LCD
Connectivity	MIDI, USB
Weight	1.2 kg

Summary

Panel Descriptions

Front Panel

Details the controls and indicators on the front of the GM-800 unit.

Rear Panel Connectivity

Explains the rear panel connections for audio, MIDI, and external control devices.

Getting Ready

Guitar/Bass Preparation

Ensures your guitar or bass has a divided pickup for optimal GM-800 connection.

Equipment Connection

Guides on connecting guitars, amps, headphones, and other devices to the unit.

Powering On the Unit

Step-by-step instructions for turning on the GM-800 and connected equipment.

Output Jack Settings

Configures the GM-800 to recognize devices connected to the OUTPUT jacks.

GK Pickup Settings

Configures settings for the divided pickup (GK pickup) type for optimal performance.

Bass Pickup Position

Sets the GK PU Pos based on the divided pickup installation location on a bass guitar.

Pickup Type Selection

Selects the correct type of pickup installed on your guitar or bass.

Pickup Sensitivity Adjustment

Balances the volume of individual strings from the divided pickup for consistency.

Overall Volume Adjustment

Controls the overall output volume of the GM-800 using the dedicated knob.

Using the Tuner

Accesses and utilizes the built-in chromatic tuner for tuning your instrument.

Playing the GM-800

Selecting Scenes

How to choose and switch between different preset or saved scenes for performance.

Understanding the Play Screen

Explains the different display modes available on the main play screen.

Using the Unit Safely

Auto Off Function Warning

Alerts about the automatic power-off feature and how to disable it.

AC Adaptor and Voltage Safety

Emphasizes using only the supplied AC adaptor and correct voltage.

Power Cord Safety

Stresses using only the supplied power cord with the unit.

Small Item Hazard

Warning to keep small parts away from children to prevent ingestion.

Ground Terminal Handling

Precautions for handling the ground terminal screw safely.

Power Supply and Placement Notes

Details on AC adaptor placement and potential surface discoloration.

Data Backup and Repairs

Advice on backing up data before repairs and Roland's liability.

Additional Precautions on Data Loss

Warnings about data loss from equipment failure or incorrect operation.

External Memory Handling Precautions

Precautions for using external memory devices safely.

Intellectual Property Rights

Information on copyright and usage of product content.

Main Specifications