G-AMP 40: How To Set Up & Use

Introduction

The Rockville G-AMP 40 Guitar Amplifier is a versatile and feature-packed amp designed for live performances, band rehearsals, solo practice, and recording sessions. This guide will walk you through setting up, connecting instruments, adjusting settings, using effects, and integrating Bluetooth or MP3 playback.

What's Included?

• G-AMP 40 Guitar Amplifier
• Footswitch Pedal (for channel switching)
• Built-in Effects & Bluetooth MP3 Module

Step 1: Connecting Your Guitar

1. Take a ¼-inch instrument cable.
2. Plug one end into your guitar's output jack.
3. Plug the other end into the G-AMP 40’s guitar input.
4. Turn on the amplifier using the power switch.

Step 2: Adjusting Volume & EQ

1. Raise the Input Volume Knob (near the guitar input).
2. Raise the Master Volume Knob to control the overall amp loudness.
3. Use the EQ knobs to shape your sound:
   • Bass – Adjusts low-end frequencies.
   • Mid – Controls the body and warmth of the sound.
   • Treble – Adjusts high-end frequencies for clarity.

Step 3: Using Overdrive & Channel Switching

• The G-AMP 40 features two channels: Clean and Overdrive.
• Switch between them using:
  1. Channel Select Button (on the amp).
  2. Footswitch Pedal (plugged into the "Footswitch" input).
• Adjust Gain and Volume Knobs to control distortion and loudness on the overdrive channel.

Footswitch Controls:

• Button 1: Activates Overdrive.
• Button 2: Switches back to Clean mode.
• Both Buttons On: Keeps Overdrive engaged but allows easy switching.

Step 4: Built-in Effects & Reverb

The G-AMP 40 features multiple effects to enhance your tone.

1. Spring Reverb

• Adds a natural ambience and depth to your sound.
• Adjust with the Spring Reverb Knob.

2. Multi-Effects Knob (Chorus, Flanger, Phaser, Tremolo)

• Turn the knob clockwise to cycle through effects.
• Increasing the setting intensifies speed and depth.
• Effects Overview:
  • Chorus: Thickens sound with a subtle echo.
  • Flanger: Adds a "jet-like" sweeping effect.
  • Phaser: Creates a swirling, psychedelic effect.
  • Tremolo: Rapid volume modulation.

3. Delay & Digital Reverb

• Turn the Delay/Reverb Knob:
  • First half: Adjusts delay time (shorter or longer).
  • Second half: Controls digital reverb depth and decay.

Step 5: Connecting a Microphone

1. Use a ¼-inch to XLR adapter cable.
2. Plug your microphone into the MIC input.
3. Raise the Mic Level Knob and Master Volume.
4. Optional: Use the Echo knob to add reverb to your vocals.

Tip: This allows you to sing and play guitar through the amp at the same time!

Step 6: Practicing with Headphones

• Plug ¼-inch headphones into the headphone jack for silent practice.
• Adjust Master Volume to control headphone output.

Step 7: Playing Music via Bluetooth or MP3

Pairing a Bluetooth Device

1. Press the Mode button to switch to Bluetooth mode.
2. On your smartphone/tablet, enable Bluetooth and select "G-AMP 40".
3. A chime confirms pairing.

MP3 Playback Options

• Play audio from:
  • FM Radio
  • USB Drive
  • SD Card
  • AUX Input

Use the MP3 control buttons (under the display) to manage playback.

Final Thoughts

The Rockville G-AMP 40 Guitar Amplifier is a powerful, all-in-one amp with great tone, built-in effects, and flexible connectivity. Whether you’re playing live, rehearsing, or recording, it provides everything you need in one unit.