Positive Grid RIFF USB Audio Guitar Interface

Introduction

The Positive Grid RIFF is a high-quality USB audio interface specifically designed for guitarists and bassists. It provides a seamless connection between your instrument and your computer or mobile device, enabling you to record, practice, and perform with digital amplifier simulations and effects. Its compact and durable design makes it suitable for both studio and on-the-go use.

Key Features

• Best-in-class USB guitar interface: Features pristine audio converters for electric guitar, acoustic, or bass.
• Versatile Compatibility: Pairs perfectly with any Digital Audio Workstation (DAW) or guitar software for recording demos, capturing ideas, or jamming.
• Built-in Tones: Includes 3 legendary preamp and overdrive settings directly integrated into the hardware.
• Auto Gain Function: Automatically adjusts input levels for optimum sound quality.
• Clear Display: Equipped with an extra large, vivid, and crisp LED backlit display for easy monitoring.
• Durable Construction: Features a rugged metal body made of anodized aluminum, designed to withstand frequent use and travel.
• Broad OS Support: Ready to use with iOS, iPadOS, macOS, and Windows operating systems.

Setup Guide

System Requirements

• Operating Systems: Windows, macOS, iOS, iPadOS
• Compatible Devices: PC, Laptop, Mobile devices
• Connectivity: USB port

Connecting the RIFF

1. Connect to Device: Use the provided USB cable to connect the RIFF to your computer (Mac/PC) or mobile device (iOS/iPadOS). The RIFF is bus-powered and does not require an external power supply.
2. Connect Instrument: Plug your electric guitar, acoustic guitar, or bass into the 1/4-inch input jack on the RIFF.
3. Connect Headphones/Monitors: For monitoring your sound, connect headphones to the 1/8-inch headphone output or connect studio monitors to the 1/4-inch line outputs.

The RIFF interface is shown connected to a laptop, with headphones plugged in, illustrating a typical setup for private practice or recording.

Software Installation

While the RIFF is plug-and-play for basic audio routing, it is recommended to install the associated Positive Grid software, such as BIAS FX 2, for full access to amplifier models, effects, and advanced tone shaping. Visit the Positive Grid website for the latest software downloads and drivers.

This image shows a user interacting with the RIFF's control knob while connected to a laptop running guitar simulation software, demonstrating real-time adjustment.

Operating Instructions

Basic Operation

• Input/Output Levels: The large LED display shows your input and output levels. Adjust the main knob to control the output volume.
• Auto Gain: The RIFF features an Auto Gain function. Press the main knob to activate or deactivate it. When active, the interface automatically sets the optimal input level for your instrument, preventing clipping and ensuring a clean signal.
• Preamp/Overdrive Settings: Cycle through the 3 built-in preamp and overdrive settings by pressing the dedicated button (if available, or by rotating/pressing the main knob in a specific mode). These provide instant tone variations without software.
• Direct Monitoring: The RIFF offers direct monitoring, allowing you to hear your instrument with zero latency directly from the interface, bypassing software processing. This is crucial for comfortable playing and recording.

The RIFF interface is positioned on a wooden desk, part of a larger studio setup including a computer monitor and audio speakers, indicating its use in a home studio environment.

Using with Software (DAWs & BIAS FX 2)

Once connected, the RIFF will appear as an audio input/output device in your chosen DAW (e.g., GarageBand, Logic Pro, Ableton Live, Cubase) or guitar software (e.g., BIAS FX 2). Select the RIFF as your audio input and output device within the software's audio settings. You can then apply virtual amplifiers, effects, and record your guitar tracks.

This image illustrates the portability of the RIFF, showing a musician playing guitar and using the interface with a mobile phone for processing.

Maintenance

Cleaning

To clean the RIFF, use a soft, dry cloth. For stubborn smudges, a slightly damp cloth with mild soap can be used, but ensure no liquid enters the ports or openings. Avoid abrasive cleaners or solvents.

Storage

Store the RIFF in a cool, dry place away from direct sunlight and extreme temperatures. When not in use, disconnect all cables to prevent strain on the ports. Its rugged metal body is designed for durability, but proper storage will extend its lifespan.

Troubleshooting

• No Sound Output:
  • Ensure the RIFF is selected as the audio output device in your computer's sound settings and your DAW/software.
  • Check headphone/monitor connections and volume levels on both the RIFF and your playback device.
  • Verify that your instrument cable is fully inserted and functional.
• No Input Signal:
  • Confirm the RIFF is selected as the audio input device in your DAW/software.
  • Check the input level on the RIFF's display. If too low, try activating Auto Gain or manually adjusting the input gain within your software.
  • Ensure your instrument is properly connected and its volume knob is turned up.
• Screen Blank/Device Unresponsive:
  • Disconnect and reconnect the USB cable.
  • Try connecting to a different USB port or a different computer/device to rule out port issues.
  • Ensure your operating system and software drivers are up to date.
• Latency Issues:
  • Enable direct monitoring on the RIFF if available.
  • Adjust buffer size settings in your DAW/software preferences. Smaller buffer sizes reduce latency but require more CPU power.
  • Close other applications that may be consuming system resources.

Specifications

Warranty and Support

For warranty information and technical support, please refer to the official Positive Grid website or contact their customer service directly. Keep your proof of purchase for any warranty claims. Positive Grid frequently updates drivers and software, so regularly check their support page for the latest versions and troubleshooting guides.

Positive Grid Official Website: www.positivegrid.com