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Boss RC-300 - User Manual

Boss RC-300
46 pages
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* This device contains demo data (Phrase Memory 90–99).
Once you delete these, they cannot be recovered. Please back them up as described in “Backing up to your computer” (p. 37).
* With the factory settings, the RC-300’s power will automatically be switched o 10 hours after you stop playing or operating the unit.
If you want to have the power remain on all the time, change the Auto O setting to “OFF” as described on Auto O Settings” (p. 33).
The settings you were editing will be lost when the power is turned o. If you want to keep your settings, you must save your settings
before turning the power o.
Main Features
Welcome to the Loop Station!
The RC-300 is a pedal-type recorder that lets you record audio phrases from your guitar or vocal etc., and play them back by operating the pedal.
You can create a wide variety of performances by layering sound while you record and carry out play back in real time.
You can save a maximum of approximately 3 hours of stereo sound (*total for all phrase memory) and up to 99 phrase memories.
Three-track recording allows a wide range of performance possibilities.
You can input audio in stereo.
In addition to guitar (INST) input, a MIC input and AUX IN jacks are also provided. You can connect a microphone and loop-record your voice, or
record sound from your digital audio player.
You can easily connect the RC-300 to your computer using a single USB cable. Once connected, you gain a digital audio connection with your
computer and the ability to export/import loop phrases (WAV les) (p. 36).
You can apply an eect that is synchronized with the tempo of tracks while you play it back. You can use the EXP (expression) pedal to control
eects (p. 28).
Two RC-300 units can be synchronized after connecting them together using a MIDI cable (p. 39).
Owners Manual

Table of Contents

Other manuals for Boss RC-300

Questions and Answers

  • A
    Allison HurleySep 10, 2025
    What does 'Data Damaged!' mean on my Boss Music Pedal and what should I do?
    • R
      Randy SmithSep 12, 2025
      If you receive a 'Data Damaged!' message, execute Factory Reset to restore the RC-300 to its factory default condition.
  • A
    Alejandro GarrettAug 23, 2025
    What to do if I am unable to hear sounds from a device connected to AUX/INST/MIC jacks on my Boss RC-300 Music Pedal?
    • Y
      Yvonne NunezAug 23, 2025
      If you can't hear sounds from devices connected to the AUX/INST/MIC jacks, try these steps: * Adjust the INPUT LEVEL knobs for AUX, INS, and MIC to suitable positions. * Confirm that the “Input Output Select” setting is correct.
  • J
    Jessica AlvaradoAug 25, 2025
    How to fix playback tempo not changing on my Boss RC-300?
    • T
      Tina BergAug 25, 2025
      If the playback tempo isn't changing, consider these points: * You cannot change the phrase memory tempo during recording or overdubbing. Adjust the tempo while the performance is stopped or being played back. * If Tempo Sync is not set to ON in a track, the playback speed will not change even if the phrase memory tempo is altered. Enable Tempo Sync in the track settings.
  • J
    James Clark MDAug 26, 2025
    What does 'MIDI Error!' mean on my Boss RC-300 Music Pedal and how can I resolve it?
    • V
      Valerie StanleyAug 27, 2025
      If you receive a 'MIDI Error!' message: * Check to make sure that no corrupt MIDI messages are being transmitted. * Reduce the number or size of MIDI messages transmitted to the RC-300.
  • W
    William ButlerAug 27, 2025
    Why can't I synchronize two RC-300 units via MIDI?
    • U
      uhernandezAug 27, 2025
      If you're having trouble synchronizing two RC-300 units via MIDI, check the following: * Ensure the assignment source “SYNC START/STOP” and assignment target are correctly configured. Specifically, on the slave unit, the assignment target for the assignment source 'SYNC START/STOP' should be set to 'ALL PLAY/STOP' or 'TR1–3 PLAY/STOP'. * Avoid changing the phrase memory tempo of the master unit during synchronized performance.
  • J
    John AndersonAug 29, 2025
    What to do if I get a 'Too Busy!' message on my Boss RC-300?
    • D
      David ReedAug 29, 2025
      If you receive a 'Too Busy!' message, try the following: * Lower the performance tempo. * Save the current content to a phrase memory. * Reduce the number of adjustments or changes made with the RC-300’s knobs and pedals. * Reduce the number or size of MIDI messages transmitted to the RC-300. * Ensure that the phrase is not shorter than 1.5 seconds.
  • C
    Connie BallSep 18, 2025
    What does 'Stop PLAY/REC!' mean on my Boss Music Pedal and how do I resolve it?
    • C
      Christopher StevensSep 18, 2025
      If you receive a 'Stop PLAY/REC!' message, stop the unit, then try the procedure again.
  • S
    Shannon LeeSep 12, 2025
    What does 'Event Full!' mean on my Boss RC-300 and how can I fix it?
    • M
      Michael LeeSep 12, 2025
      If you receive an 'Event Full!' message, re-save the phrase.
  • J
    Jennifer PatelSep 8, 2025
    What does 'Buffer Full!' mean on my Boss RC-300 and how can I fix it?
    • M
      Mrs. Sharon KelleySep 8, 2025
      If you receive a 'Buffer Full!' message, decrease the amount of MIDI messages that are being sent to the RC-300.
  • D
    Dana TurnerSep 5, 2025
    What to do if I am unable to communicate with computer using my Boss RC-300 Music Pedal?
    • B
      bradyscottSep 5, 2025
      If you're unable to communicate with your computer, check the USB cable connection. If exchanging files via USB, ensure the USB Mode is set to “STORAGE”.

Summary

Basic Operation

Phrase Memory Selection and Recording

How to choose phrase memories and begin capturing audio performances.

Overdubbing, Playback, and Stopping

Techniques for layering performances, looping, and halting operations.

Track Clear and Undo;Redo

Managing recorded tracks and correcting mistakes.

Single and Multi-Track Recording

Methods for recording on one or multiple tracks simultaneously.

Saving and Managing Phrase Memories

Saving a Phrase Memory (Write)

Step-by-step guide to saving the current phrase memory.

Deleting Phrase Memories (Initialize)

Process for erasing phrase memories and resetting their settings.

Phrase Memory Settings

Pedal and Controller Assignments

Customizing functions for pedals and external controllers.

Using LOOP FX

LOOP FX On;Off and Control

Activating effects and using the EXP pedal for modulation.

Selecting LOOP FX Categories and Types

Choosing specific effects from categories and types.

Connecting to Your Computer via USB

USB Function Settings and File Exchange

Configuring USB functions and managing WAV files with a computer.

Backing Up and Recovering Data via USB

Steps for backing up and restoring RC-300 data and WAV files.

Connecting External MIDI Devices

Synchronizing Two RC-300 Units via MIDI

Steps for synchronizing two RC-300 units for simultaneous playback.

Controlling External Devices and RC-300 with MIDI

Using MIDI to control external gear and the RC-300 itself.

Restoring Factory Settings (Factory Reset)

Troubleshooting

Sound and Operation Problems

Troubleshooting steps for audio issues and operational malfunctions.

Error Message List

Explanations and actions for error messages displayed by the RC-300.

USING THE UNIT SAFELY

Boss RC-300 Specifications

General IconGeneral
Bit rate16 bit
Best usesGuitar
Sample rate44.1 kHz
Product typeFootswitch/controller
Product colorRed, Black
Sound effectsYes
Output impedance2000 Ω
Rhythms quantity83
Maximum recording time3 h
Sound effects quantity-
Display typeLED
Power source typeAC
Weight and Dimensions IconWeight and Dimensions
Depth231 mm
Width536 mm
Height76 mm
Weight3900 g

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