BOSS Nextone Stage 40-watt 1x12 Combo Amp Instruction Manual

Introduction

This manual provides essential information for the safe and effective use of your BOSS Nextone Stage 40-watt 1x12 Combo Amp. The Nextone series combines classic tube sound and feel with next-generation tonal diversity. It features distinctive channel voicings and four selectable Class AB analog power amp types, offering access to the unique characteristics of 6V6, 6L6, EL84, and EL34 output tube sections. Powered by advanced Tube Logic technology, each power amp type re-voices the entire circuit from input to output, providing a comprehensive sonic experience.

Key features include:

• Professional performance amplifier with authentic Tube Logic tone.
• Four analog Class AB power amp circuits, selectable from the panel: 6V6, 6L6, EL84, and EL34.
• Streamlined combo design with 40 watts of power and custom 12-inch speaker.
• Clean and lead channels, with standard and custom mode options.
• Dynamically responsive power control for cranked-up sound and response at reduced volumes.

Safety Information

Please read and understand all safety instructions before operating this product. Retain this manual for future reference.

• Power Supply: Use only the specified power adapter. Ensure the voltage matches your local power supply.
• Ventilation: Do not block ventilation openings. Ensure adequate airflow around the amplifier to prevent overheating.
• Moisture: Do not expose the unit to rain, moisture, or excessive humidity. Avoid placing liquid-filled objects on the amplifier.
• Foreign Objects: Do not insert any objects into the unit's openings.
• Servicing: Refer all servicing to qualified service personnel. Do not attempt to repair the unit yourself.
• Placement: Place the amplifier on a stable, level surface. Avoid extreme temperatures or direct sunlight.

Setup

1. Unpacking and Placement

Carefully remove the amplifier from its packaging. Place it on a stable, flat surface, ensuring proper ventilation around the unit.

Figure 1: Front view of the BOSS Nextone Stage amplifier.

2. Connecting Power

Connect the supplied power cord to the AC IN jack on the rear panel of the amplifier and then to a suitable AC outlet.

Figure 2: Rear panel connections, including AC IN, PHONES/REC OUT, LINE OUT, EFFECT LOOP, FOOT CONTROL, and USB.

3. Connecting Your Guitar

Plug your guitar into the INPUT jack on the front panel using a standard 1/4-inch instrument cable.

4. Connecting External Devices

• Foot Control: For hands-free control of channels and effects, connect an optional footswitch (e.g., BOSS GA-FC) to the FOOT CONTROL jack.
• Headphones/Recording: Use the PHONES/REC OUT jack for silent practice with headphones or for direct recording.
• Line Out: The LINE OUT jack provides an unbalanced output for connecting to a mixer or other audio interface.
• Effect Loop: Use the EFFECT LOOP (SEND/RETURN) jacks to integrate external effects pedals into the amplifier's signal path.
• USB: Connect the amplifier to a computer via the USB port for editing tones with the BOSS Tone Studio software or for direct recording.

Operating the Amplifier

1. Powering On/Off

Press the POWER switch to turn the amplifier on or off. The indicator light will illuminate when the unit is powered on.

2. Control Panel Overview

Figure 3: Detailed view of the amplifier's control panel, showing various knobs and switches.

• CH SELECT: Switches between Clean and Lead channels. Press and hold for Custom mode options.
• BOOST: Activates the built-in boost function for added gain.
• VOLUME (Clean/Lead): Adjusts the volume for the selected channel.
• GAIN: Controls the amount of overdrive/distortion for the Lead channel.
• EQUALIZER (BASS, MIDDLE, TREBLE): Adjusts the tonal characteristics of your sound.
• EFFECT (DELAY, REVERB, PRESENCE): Controls the level and type of built-in effects.
• MASTER: Overall output volume control.
• POWER AMP SELECT: Choose between 6V6, 6L6, EL84, and EL34 power amp characteristics.
• POWER CONTROL: Adjusts the amplifier's output wattage (0.5W, HALF, MAX) for optimal tone at any volume level.

3. Speaker Outputs

The amplifier features multiple speaker outputs for flexible connectivity. Ensure the impedance of your external speaker cabinet matches the selected output.

Figure 4: Speaker output jacks (8Ω, 16Ω A, 16Ω B) on the rear panel.

Maintenance

• Cleaning: Wipe the unit with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents.
• Storage: When not in use, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
• Transportation: When transporting the unit, ensure it is securely packed to prevent damage from impacts or vibrations.

Troubleshooting

If you encounter any issues with your BOSS Nextone Stage amplifier, please refer to the following common solutions:

• No Sound:
  • Check all cable connections (power, guitar, speaker).
  • Ensure the amplifier is powered on and the volume controls are not set to zero.
  • Verify that your guitar's volume is turned up.
• Distorted Sound:
  • Reduce the GAIN or VOLUME settings.
  • Check your guitar's output level.
  • Ensure the speaker impedance matches the amplifier's output.
• Unresponsive Controls:
  • Power cycle the amplifier (turn off, wait a few seconds, then turn back on).
  • If using BOSS Tone Studio, ensure the software is correctly connected and not interfering with panel controls.

If the problem persists, please contact BOSS customer support for further assistance.

Specifications

Warranty and Support

Your BOSS Nextone Stage amplifier is covered by a manufacturer's warranty. Please refer to the warranty card included with your product for detailed terms and conditions. For technical support, service, or additional product information, please visit the official BOSS website or contact your local BOSS distributor.

Online Resources: For the latest software updates, drivers, and detailed documentation, visit www.boss.info.