TritonAudio GS458RT

Triton Audio FetHead In-Line Microphone Preamp

Model: GS458RT - Instruction Manual

Manufactured by Triton Audio

Introduction

The Triton Audio FetHead is a high-quality, low-noise in-line microphone preamplifier designed to provide clean gain for dynamic and ribbon microphones. It enhances microphone signal strength, ensuring optimal performance and clarity for recording and live sound applications. This manual provides essential information for setting up, operating, and maintaining your FetHead.

Key Features

  • Low-Noise Class-A JFET Amplifier: Ensures a clean and transparent signal boost.
  • Double Single-Ended Amplifier Topology: Contributes to superior audio performance.
  • Shielded Enclosure: Minimizes electromagnetic interference for a pristine signal.
  • 4 Matched JFETs: For consistent and reliable amplification.

Setup

The FetHead is designed for straightforward integration into your audio chain. It requires 48V phantom power from your mixer or audio interface to operate.

  1. Connect Microphone: Plug your dynamic or ribbon microphone's XLR output into the female XLR input of the FetHead.
  2. Connect to Preamp/Interface: Connect the male XLR output of the FetHead to an XLR input on your audio interface or mixer.
  3. Activate Phantom Power: Ensure that 48V phantom power is activated on the corresponding channel of your audio interface or mixer. The FetHead will draw power from this and provide the necessary gain boost to your microphone.
Triton Audio FetHead in-line microphone preamp
Figure 1: The Triton Audio FetHead in-line microphone preamp. This compact device connects directly to your microphone's XLR output.
Triton Audio FetHead connected to a microphone
Figure 2: The FetHead connected to a microphone, ready to be plugged into an audio interface. This setup provides a clean gain boost directly at the microphone.
Multiple Triton Audio FetHeads connected to an audio interface
Figure 3: Multiple FetHead units connected to an audio interface, demonstrating a typical studio setup for multiple microphones.

Setup Demonstration Video

Video 1: A demonstration of how to set up and connect an in-line microphone preamp to an audio interface. This video illustrates the connection process for a similar preamp, which is applicable to the FetHead.

Operation

Once connected and phantom power is supplied, the FetHead automatically provides a fixed gain boost to your microphone signal. There are no controls or adjustments on the FetHead unit itself, ensuring a simple and consistent operation.

  • The FetHead acts as a transparent gain stage, boosting the microphone's output without altering its sonic characteristics.
  • It is particularly beneficial for low-output microphones like passive ribbon mics and many dynamic microphones, which often require significant gain from the preamp.
  • The low-noise design ensures that the added gain does not introduce unwanted hiss or hum into your signal.

Product Overview Video

Video 2: A basic introduction to the Rodyweil RO-04 Mic Preamp, showcasing its features and controls. While a different brand, the principles of operation for an in-line preamp are similar.

Maintenance

The Triton Audio FetHead is a robust and durable device designed for long-term use with minimal maintenance.

  • Cleaning: Use a soft, dry cloth to wipe the exterior of the unit. Avoid using liquid cleaners or solvents.
  • Storage: Store the FetHead in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
  • Handling: Handle the unit with care. Avoid dropping it or subjecting it to strong impacts.

Troubleshooting

If you encounter issues with your FetHead, consider the following:

  • No Signal/Low Output:
    • Ensure 48V phantom power is active on your audio interface/mixer channel. The FetHead requires phantom power to operate.
    • Check all XLR cable connections for proper seating and integrity.
    • Verify that your microphone is functioning correctly by testing it directly with your audio interface (without the FetHead).
  • Unwanted Noise/Hum:
    • Ensure all cables are properly shielded and in good condition.
    • Check for ground loops in your audio setup.
    • Test the FetHead with a different microphone and/or audio interface to isolate the source of the noise.

Specifications

SpecificationValue
Model NumberGS458RT
BrandTritonAudio
Item Dimensions (L x W x H)5.05 x 1.25 x 1.2 inches
Item Weight1.76 ounces
MaterialMetal
Voltage24 Volts (Phantom Power)
Number of Channels2
Specification MetRoHS

Warranty and Support

For warranty information or technical support, please refer to the official Triton Audio website or contact your authorized dealer. Keep your proof of purchase for any warranty claims.

© 2025 Triton Audio. All rights reserved.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.