DigiTech RP55 Guitar Multi-Effects Processor User Manual

Introduction

Product Overview

The DigiTech RP55 is a compact yet powerful guitar multi-effects processor designed to provide a wide range of tonal possibilities. It features 11 amp models and 20 studio-quality effects, allowing up to 8 effects to be used simultaneously. The RP55 is engineered for ease of use, enabling quick selection of amp types and preset effect settings without complex parameter adjustments. It incorporates DigiTech's AudioDNA™ DSP chip for high-quality effects and amp modeling, along with 24-bit A/D/A conversion to maintain audio fidelity. Additional features include a drum machine with 30 patterns and a 13-LED chromatic tuner.

Figure 1: Top view of the DigiTech RP55 Guitar Multi-Effects Processor, illustrating the control panel, display, and footswitches.

Key Features

• 11 Amp Types for diverse tonal characteristics.
• 5 Cabinet Types to shape your sound.
• 20 Studio Quality Effects, including modulation, delay, and reverb.
• Built-in drum machine with 30 patterns for practice and rhythm.
• Can be battery operated (requires 6 AA batteries) for portable use.
• Integrated 13-LED chromatic tuner for accurate instrument tuning.
• AudioDNA™ DSP chip and 24-bit A/D/A conversion for high-fidelity audio.

Setup

Powering the RP55

The RP55 can be powered by either six AA batteries or an optional 9V DC power adapter (not included). For extended use, a power adapter is recommended. Ensure the power adapter meets the specified voltage and polarity requirements to prevent damage.

• Battery Installation: Open the battery compartment on the underside of the unit. Insert six AA batteries, observing the correct polarity markings.
• AC Adapter Connection: Connect a compatible 9V DC power adapter to the power input jack on the RP55.

Connecting Your Equipment

Proper connection ensures optimal sound quality and functionality.

1. Guitar Input: Connect your guitar to the INPUT jack on the RP55 using a standard 1/4-inch instrument cable.
2. Amplifier/Mixer Output: Connect the OUTPUT jack of the RP55 to your guitar amplifier's input or a mixing console using a 1/4-inch instrument cable.
3. Headphones: For silent practice, connect headphones to the OUTPUT jack. The RP55 automatically adjusts for headphone use.

Operating Instructions

Basic Operation and Preset Selection

The RP55 features 40 factory presets and 40 user presets. Use the footswitches to navigate through presets.

• Press the UP footswitch to increment through presets.
• Press the DOWN footswitch to decrement through presets.
• The LED display will show the current preset number.

Adjusting Amp Models and Effects

The RP55 simplifies tone shaping by allowing direct selection of amp models and effects without deep menu diving.

1. Press the EDIT/EFFECT button to enter edit mode.
2. Use the VALUE/MASTER VOLUME knob to scroll through different amp models and effect types (e.g., Noise Gate, Compressor, Amp Model, EQ, Chorus/Mod, Delay, Reverb).
3. Once an effect type is selected, rotate the VALUE/MASTER VOLUME knob to adjust its parameter or select a specific model within that effect category.
4. The RP55's design focuses on providing pre-configured settings for each effect, making adjustments intuitive.

Using the Drum Machine

The built-in drum machine offers 30 patterns for practice.

• To activate the drum machine, press the DRUM button.
• Use the VALUE/MASTER VOLUME knob to select different drum patterns.
• Adjust the tempo of the drum pattern using the dedicated TEMPO control.

Chromatic Tuner

The RP55 includes a 13-LED chromatic tuner for accurate guitar tuning.

• To engage the tuner, press and hold both footswitches simultaneously.
• Play a single note on your guitar. The LEDs will indicate if the note is flat, sharp, or in tune.
• Press either footswitch to exit tuner mode.

Saving User Presets

After customizing an effect or amp setting, you can save it to one of the 40 user preset locations.

• While in edit mode, make your desired adjustments.
• Press and hold the STORE button.
• Use the footswitches to select the desired user preset location (1-40).
• Press the STORE button again to confirm and save.

Maintenance

To ensure the longevity and optimal performance of your DigiTech RP55, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid abrasive cleaners or solvents, which can damage the finish.
• Storage: Store the RP55 in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Battery Care: If the unit will not be used for an extended period, remove the batteries to prevent leakage and potential damage.
• Cable Connections: Periodically check all cable connections for wear and tear. Ensure cables are securely plugged in during use.

Troubleshooting

If you encounter issues with your RP55, consider the following common troubleshooting steps:

• No Sound:
  • Check all cable connections (guitar to RP55, RP55 to amplifier/headphones).
  • Ensure the RP55 is powered on and receiving power (check batteries or AC adapter).
  • Verify that the volume levels on your guitar, RP55, and amplifier are appropriately set.
  • Bypass the RP55 to confirm your guitar and amplifier are working correctly.
• Distorted or Unwanted Noise:
  • Check for loose cable connections.
  • Ensure the input gain on the RP55 or your amplifier is not set too high.
  • Experiment with different presets or effect settings to isolate the source of the noise.
  • If using batteries, replace them with fresh ones.
• Tuner Not Responding:
  • Ensure you are playing a single note clearly.
  • Verify that the tuner mode is correctly engaged (hold both footswitches).

Specifications

Warranty and Support

Information regarding the specific warranty terms and official support channels for the DigiTech RP55 Guitar Multi-Effects Processor was not available in the provided product data. For detailed warranty information and technical support, please refer to the official DigiTech website or contact their customer service directly.