Triton Audio FetHead Filter

• Gain filter for low-output mics
• 27dB clean gain, enhances mic performance
• Built-in HPF eliminates unwanted low frequencies
• Protects ribbon mics from phantom power damage
• Plug-and-play, no external power, durable

NT$3,850

NT$3,150

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Triton Audio FetHead Filter｜In-line Microphone Preamp with Built-in High-Pass Filter

Inject 27dB of Clean Gain While Filtering Annoying Low Frequencies

The Triton Audio FetHead Filter is a high-quality **in-line microphone preamplifier**. It not only possesses all the advantages of the standard FetHead—utilizing a low-noise Class-A JFET Active Electronics, providing up to 27dB of clean Gain for low-output **Dynamic Microphones** and **Ribbon Microphones**—but also integrates an additional **High-Pass Filter (HPF)**. This upgraded tool allows you to enhance signal clarity while effectively filtering out low-frequency noise from air conditioning, traffic, or stage rumble at the source.

Compared to the standard FetHead, the Filter version is particularly suitable for recording scenarios that require handling proximity effect or ambient low-frequency rumble. It also protects fragile passive microphones from Phantom Power damage, making it the ultimate solution for pairing with broadcast-grade microphones like the Shure SM7B, EV RE20, or for recording clear vocals in less-than-ideal environments.

Quick Facts Product Overview

Brand: Triton Audio
Model: FetHead Filter
Gain: +27dB (Fixed)
High-Pass Filter: 220Hz (-6dB/octave)
Active Electronics: Low-Noise Class-A JFET
Power Source: Phantom Power (+48V)
Use Cases: Podcast Recording, Vocal Recording, Instrument Miking, Outdoor Interviews, Live Performances

使用者建議分析(點此展開)

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適合誰購買

Content creators using low-output Dynamic Microphones like Shure SM7B, EV RE20, who need clean Gain.
Podcast hosts and singers who need to filter out low-frequency noise from air conditioning, traffic, etc., or mitigate vocal proximity effect at the recording source.
Recording engineers with valuable Ribbon Microphones who want to protect their microphones from Phantom Power damage while achieving clear audio quality.
Musicians whose audio interface's built-in preamps have insufficient Gain or high noise, and who wish to significantly improve sound quality at a low cost.

誰不適合購買

Users primarily using Condenser Microphones (the FetHead Filter blocks Phantom Power, which Condenser Microphones need to operate).
Professional users whose audio interface already features high-Gain, ultra-low noise preamps and have no additional tonal requirements.

Triton Audio FetHead Filter Core Technologies and Features

27dB Clean Gain: Designed for low-output microphones, providing a fixed 27dB of ultra-clean Gain, eliminating the need to push your audio interface's Gain to its limits, significantly reducing system Self-noise.
Built-in High-Pass Filter: Integrates a 220Hz High-Pass Filter (-6dB/octave), effectively cutting unnecessary low-frequency rumble, wind noise, or proximity effect at the source, resulting in cleaner, clearer recorded sound.
Low-Noise Class-A JFET Active Electronics: Utilizes a high-quality Class-A JFET (Junction Field-Effect Transistor) amplification Active Electronics, ensuring transparent audio signals with rich detail, and a natural, warm tone.
Protect Your Ribbon Microphones: The FetHead Filter operates using Phantom Power itself, but completely blocks the Power Source from reaching the microphone, providing foolproof protection for your valuable and fragile passive Ribbon Microphones.
Plug-and-Play, No External Power Required: Robust metal casing, one end connects to the microphone, the other to an XLR cable leading to your audio interface or console. Simply activate Phantom Power to use immediately.

Core Function Details

Integrated High-Pass Filter: The built-in 220Hz High-Pass Filter processes the signal at the first stage of amplification, preventing low-frequency noise from consuming Dynamic Range, making vocals and instruments stand out more.
Signal Chain Optimization: Installing the FetHead Filter directly at the microphone output allows for first-stage amplification before the signal is affected by cables or other equipment, ensuring optimal Signal-to-Noise Ratio at the source.
Impedance Matching: Optimized Active Electronics design helps provide the ideal load Impedance for the microphone, further improving the Frequency Response and transient response of certain Dynamic and Ribbon Microphones.
Phantom Power Isolation: The internal Active Electronics cleverly uses 48V Phantom Power to power itself, while creating an isolation layer to prevent current from damaging passive microphones, especially vintage Ribbon Microphones.

Technical Specifications (Tech Specs)

Microphone Preamp Type	In-line Preamp
Channel Support	Mono
Gain	+27dB (Fixed)
High-Pass Filter	220Hz, -6dB/octave
Active Electronics	Class-A JFET
Analog Inputs	1 x XLR (Female)
Analog Outputs	1 x XLR (Male)
Power Source	Phantom Power (+48V)

Pros & Notes (Click to expand)

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Pros

Built-in practical 220Hz High-Pass Filter for cleaner vocal recordings without post-production.
Provides 27dB of clean Gain, significantly improving the performance of low-output Dynamic and Ribbon Microphones.
Class-A JFET Active Electronics ensure transparent and natural tone, faithful to the microphone's original characteristics.
Effectively blocks Phantom Power, providing safe protection for valuable passive microphones.
Compact, robust, plug-and-play, no external Power Source required.

Notes to Know

Cannot be used with Condenser Microphones that require Phantom Power.
The High-Pass Filter frequency is fixed at 220Hz and cannot be adjusted or turned off.

Triton Audio FetHead FAQ

Q：Can the Triton Audio FetHead Filter In-line Microphone Preamp be used with condenser microphones?

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A：No. The FetHead Filter blocks Phantom Power, and Condenser Microphones require Phantom Power to operate. It is designed for Dynamic and passive Ribbon Microphones that do not require external Power Source.

Q：What is the difference between FetHead Filter and the standard FetHead?

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A：The main difference is that the Filter version has a built-in 220Hz High-Pass Filter, which effectively filters out low-frequency noise. Both provide the same 27dB clean Gain and Class-A JFET Active Electronics design.

Q：Do I need to provide separate power for the FetHead Filter?

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A：No. It is powered by the +48V Phantom Power supplied by your audio interface or mixer via the connected XLR cable, and does not require batteries or an external Power Source.

Q：Will using the FetHead Filter change my microphone's tone?

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A：Aside from filtering out frequencies below 220Hz, the FetHead Filter is designed to provide extremely transparent Gain in other frequency bands, with minimal impact on the original tone, remaining faithful to the original sound.

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※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.

Warranty & Return Policy

With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.

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