Positive Grid RIFF - User Manual

OUTPUT JACK
This stereo jack provides a mix of the audio being
played back along with the input signal – depending
on the input volume set by the RIFF DIRECT parameter.
Use the appropriate cabling to connect this output to
your monitoring system, if desired. This signal is
identical to the jack signal.
USB
The USB connection establishes a two-way audio
connection between RIFF and your computer, and also
provides RIFF with the power it needs. The display will
indicate RIFF is connected and ready to use.
(Mac) (PC)
RIFF LOWER END PANEL
RIFF UPPER END PANEL
Meet RIFF.
Your RIFF is a handy recording interface designed specifically for the guitarist and
bassist. It connects directly to your PC, Mac, or Apple iOS device via USB. The design
is intuitive and uncluttered, providing quick access to all features. Extras include direct
signal monitoring that allows latency-free recording. Plus, you’ll even find a variety of
preset guitar tones. So let’s get started.
RIFF | Go! Guide
Getting Connected.
HEADPHONE OUTPUT
The audio signal present at this jack is identical to the
OUTPUT jack signal. This 3.5mm (1/8") stereo jack can
accommodate headphones rated from 16 Ohms to 64
Ohms.
INPUT
Plug your guitar or bass directly into this jack.
Selecting RIFF as the Input on your
Computer.
In general, if you connect RIFF to your computer before
launching your recording software, it will automatically
recognize RIFF and select it as the audio input source. If
not, you will have to choose it manually. For Mac, open
System Settings and select Sound. Click on the Input tab
and choose RIFF (Positive Grid). PC users will need to
open the Control Panels and select Sound. Click on the
Recording (input) tab and select RIFF (Positive Grid).
Selecting RIFF as the Output.
Depending on your setup, you may or may not want to use RIFF as the output device. If you have an existing
computer music rig that is already connected to your studio monitoring system, you may want to continue to use
that system. Using RIFF is ideal if you are working with headphones or a personal monitoring system.

Summary

RIFF Overview and Connectivity

Output Jack

Stereo jack providing a mix of playback and input audio for monitoring.

USB Connection

Connects RIFF to PC/Mac/iOS for audio and power; indicates readiness.

Headphone Output

3.5mm stereo jack for headphones, mirroring the main output signal.

Instrument Input

Direct jack for plugging in your guitar or bass.

Configure RIFF Audio Settings

Set as Computer Input

Steps to set RIFF as the audio input source on Mac and PC.

Set as Computer Output

Guidance on using RIFF for audio output, ideal for headphones.

Using RIFF Controls and Parameters

Display and Indicator Lights

Explanation of the display screen elements and indicator lights (CLIP, DIRECT, TONE).

Control Knob Operation

How to navigate parameters (INPUT, OUTPUT, DIRECT, TONE) using the control knob.

Parameter Adjustments

Details on adjusting Input, Output, Direct mix, and Tone presets.

Overview

1. Getting Connected
2. Selecting RIFF as the Input on your Computer
3. Selecting RIFF as the Output
4. Using the Controls
5. Parameters
6. Maintenance Features

The Positive Grid RIFF is a compact and intuitive recording interface designed primarily for guitarists and bassists. It facilitates high-quality audio recording by connecting directly to a PC, Mac, or Apple iOS device via a USB connection. Its user-friendly design prioritizes ease of access to all features, making it suitable for both beginners and experienced musicians. A key feature is its direct signal monitoring capability, which allows for latency-free recording, ensuring that musicians can hear their input without delay while playing. Additionally, the RIFF comes pre-loaded with a variety of preset guitar tones, offering immediate access to different sounds without the need for extensive external processing.

Getting Connected

The RIFF features a straightforward layout for connectivity. On the upper end panel, you'll find the OUTPUT Jack. This is a stereo jack that provides a mixed audio signal, combining the playback audio with the input signal. The balance between these two signals is determined by the RIFF's DIRECT parameter. Users can connect this output to their monitoring system (e.g., studio monitors or an amplifier) using appropriate cabling. The signal from this jack is identical to the signal provided by the headphone output.

Also on the upper end panel is the USB port. This connection serves two crucial functions: it establishes a two-way audio connection between the RIFF and your computer or iOS device, and it provides the necessary power for the RIFF to operate. Once connected, the RIFF's display will indicate that it is ready for use.

On the lower end panel, there is a HEADPHONE OUTPUT. This 3.5mm (1/8") stereo jack delivers an audio signal identical to that of the main OUTPUT jack. It is designed to accommodate headphones with impedance ratings ranging from 16 Ohms to 64 Ohms, making it versatile for various headphone types. Adjacent to the headphone output is the INPUT jack, where you directly plug in your guitar or bass.

Selecting RIFF as the Input on your Computer

For most setups, if the RIFF is connected to your computer before launching your recording software, it should automatically be recognized and selected as the primary audio input source. However, if this doesn't happen, manual selection is straightforward.

For Mac users, navigate to "System Settings" and then "Sound." Click on the "Input" tab and select "RIFF (Positive Grid)" from the list of available devices.

For PC users, open "Control Panels" and then "Sound." Click on the "Recording (input)" tab and select "RIFF (Positive Grid)."

Selecting RIFF as the Output

Whether or not to use the RIFF as your output device depends on your existing audio setup. If you already have a dedicated studio monitoring system connected to your computer, you might prefer to continue using that system for output. However, the RIFF is an excellent choice for output when working with headphones or a personal monitoring system, offering a convenient and high-quality audio experience.

Using the Controls

The RIFF's interface is designed for intuitive control, primarily through a single Control Knob and a clear Display.

1. DISPLAY: The central display provides real-time feedback on the current parameter and its value. The parameter name is highlighted by a box, and its value is shown as a two-digit number in the center. The left side of the display features a vertical Input Level meter, while the right side shows a vertical Output Level meter, allowing you to visually monitor your audio levels.

2. INDICATOR LIGHTS: Below the display, three indicator lights provide additional visual cues:

   • CLIP: This LED indicates the input signal level. It glows green when a signal is present. If the signal level exceeds the maximum and clipping occurs, it turns red. If you frequently see the red light, it's advisable to lower the input level.
   • DIRECT: This blue LED illuminates when the DIRECT parameter is set to a value other than 0 (Off), serving as a reminder that direct monitoring is active.
   • TONE: This amber LED lights up when one of the preset TONEs is selected, indicating that a tone effect is engaged.

3. CONTROL KNOB: The RIFF is operated entirely using this single knob. Pushing down on the Control Knob cycles through the selectable parameters: INPUT, OUTPUT, DIRECT, and TONE, returning to INPUT in a continuous loop. Rotating the Control Knob adjusts the value of the currently selected parameter, with changes reflected on the display.

Parameters

• INPUT (0 to 50): This parameter controls the volume of the input signal from your instrument. The vertical Input Volume meter on the left of the display visually represents this level. Remember that the CLIP warning LED is directly affected by this parameter's setting.

• OUTPUT (0 to 50): This parameter adjusts the volume of the overall output signal. The vertical Output Volume meter on the right of the display shows this level. It's generally recommended to keep this level relatively high to minimize noise. For safe listening, use the volume controls on your external monitoring system.

• DIRECT (0 to 10): This parameter mixes the "dry" (unprocessed) input signal with the "wet" (processed) output from your recording software. By incorporating the direct signal, you can achieve zero-latency recording, which is crucial for overdubbing new parts without delay. While some software might offer similar functionality, the RIFF's direct monitoring is particularly convenient when using the device with a laptop and headphones. If the DIRECT parameter is set to any value other than 0 (Off), the DIRECT indicator light will activate.

• TONE (0, 1, 2, 3): The RIFF utilizes DSP technology to provide a selection of preset tones. These built-in TONEs are designed to emulate popular guitar effect pedals, making it easy to achieve a great sound directly at the recording stage. TONEs are applied only to the input/direct signal. To select a TONE, choose the TONE parameter and rotate the Control Knob. When a TONE other than 0 (Off) is selected, the TONE indicator light will illuminate.

  • TONE 1: MODERN: This option adds a subtle amount of compression to the direct signal, resulting in a more consistent and polished sound.
  • TONE 2: TRANSPARENT: This option enhances both the low and high frequencies, creating an authentic, full-range sound.
  • TONE 3: OLD SCHOOL FAT: This option boosts the midrange frequencies, delivering a chunkier, fatter sound.
  • 0: OFF: No TONE effect is applied.

Maintenance Features

The RIFF is designed for simplicity and durability. As an audio interface, it generally requires minimal maintenance. Keeping the device clean and free from dust is recommended to ensure optimal performance and longevity of its components, particularly the jacks and the Control Knob. Avoid exposing the device to extreme temperatures or moisture. The robust design ensures that the RIFF can withstand regular use in various recording environments. For any operational issues or questions, users are encouraged to visit the Positive Grid online Help Center, which provides manuals, FAQs, and support contact options.

Positive Grid RIFF Specifications