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Average Price: $195

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$70

$251+

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Based on price data from 1 merchant for "GFI System Rossie Filter". Prices shown reflect NEW condition. Tracking began Apr 23, 2026.

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Description

Step into the world of sonic exploration with the GFI System Rossie Filter, a dynamic multi-filter pedal crafted for both electric guitar and bass enthusiasts. This versatile pedal offers three distinctive filter modes—Envelope, Step, and Manual—that let you sculpt your sound with precision and creativity. Whether you're aiming for subtle modulation or radical tonal shifts, the Rossie Filter provides the tools to make your musical vision a reality.

Each of the filter modes offers four filter types: low-pass, band-pass, high-pass, and peaking, giving you a broad palette of tones to choose from. The adjustable sweep range and resonance width allow for fine-tuning, ensuring your sound sits perfectly in the mix. The inclusion of a mix control lets you blend the wet and dry signals effortlessly, maintaining the clarity of your original tone while introducing new textures.

Designed with the modern musician in mind, the Rossie Filter is equipped with intuitive controls—Param. Range, Mix, and Modes—making it a user-friendly choice for both studio sessions and live performances. The pedal's foot-switchable Engage & Ramp, A/B & Tap functions add an extra layer of flexibility, allowing for seamless transitions and real-time manipulation of your sound.

Key Features:

  • Dynamic multi-filter pedal with 3 filter modes: Envelope, Step, Manual
  • 4 filter types per mode: low-pass, band-pass, high-pass, peaking
  • Adjustable sweep range and resonance width
  • Mix control for blending wet and dry signals
  • Footswitch options: Engage & Ramp, A/B & Tap
  • Input and output: 6.3 mm jack
  • Power supply: 9 V DC (not included), 110 mA consumption
  • LED indicator for effect status

Whether you're seeking subtlety or boldness, the GFI System Rossie Filter is your gateway to a new realm of sonic possibilities.

Product specs

Available since November 2021
Effect Types Envelope Filter

FAQs

What type of effect does the GFI System Rossie Filter provide?

The GFI System Rossie Filter is an envelope filter pedal, which creates dynamic, auto-wah-like effects that respond to the intensity of your playing.

Is the GFI System Rossie Filter suitable for bass guitar?

Yes, the GFI System Rossie Filter works well with bass guitars, offering a range of expressive filter effects that enhance bass tones.

What power supply does the GFI System Rossie Filter require?

The GFI System Rossie Filter requires a standard 9V DC power supply, typically center-negative, which is common for most guitar pedals.

Can the GFI System Rossie Filter be used with other effects pedals?

Yes, the GFI System Rossie Filter can be integrated into a pedalboard with other effects, allowing for creative sound combinations and expanded tonal possibilities.

How does the GFI System Rossie Filter respond to different playing dynamics?

The GFI System Rossie Filter adjusts its filter sweep based on the intensity of your playing, making it highly responsive to picking dynamics for expressive performance.

JayLeonardJ

JayLeonardJ

The Funk Monster | GFI System Rossie Multi-Filter Pedal

Video thumbnail for The Funk Monster | GFI System Rossie Multi-Filter Pedal by JayLeonardJ

The Funk Monster | GFI System Rossie Multi-Filter Pedal

JayLeonardJ

JayLeonardJ

Video thumbnail for GFI System Rossie Filter pedal by R.J. Ronquillo

GFI System Rossie Filter pedal

R.J. Ronquillo

R.J. Ronquillo

Video thumbnail for GFI System Rossie Filter by Mike Hermans

GFI System Rossie Filter

Mike Hermans

Mike Hermans

Video thumbnail for Demos in the Dark // GFI System Rossie Filter // Guitar Pedal Demo by Demos In The Dark

Demos in the Dark // GFI System Rossie Filter // Guitar Pedal Demo

Demos In The Dark

Demos In The Dark

Video thumbnail for A multi purpose filter! The GFI System Rossie! by Sasha Ivantic

A multi purpose filter! The GFI System Rossie!

Sasha Ivantic

Sasha Ivantic

Reviews

PROS

  • Offers 3 distinct functions: envelope filter, step filter, manual filter

  • High-quality sound and build

  • Precise adjustment capabilities for desired effects

  • Intuitive and simple controls, easy to use without extensive manuals

  • Compatible with expression pedals for additional control

  • Features tap tempo and can store 2 presets

  • Versatile, adapts well to any guitar type

  • Excellent for funk music enthusiasts

  • Flawless triggering, ideal for fingerstyle or slide guitarists

  • Produces rich, artifact-free sounds

CONS

  • Requires some learning for optimal use

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about GFI System Rossie Filter.

Features and functionality

  • Rossie offers three modes: Manual, Envelope, and Step-Filter, with step-filter patterns that mimic an auto-wah.

    Source
  • The pedal includes an A/B preset toggle, tap tempo, and momentary engaging, but lacks MIDI capabilities.

    Source
  • Owners find the Rossie's '4-function' knobs provide deep control, although full exploration takes time.

    Source
  • It's queried if the Rossie's envelope reaction time is adjustable, indicating user interest in customization.

    Source
  • The Rossie allows for expression pedal capabilities, providing more nuanced control over the filter effect compared to pedals without this feature.

    Source
  • The Rossie offers a standard 1/4" jack for expression and tap, enabling use with controllers like the Morningstar MC8 for wah and synced step filter functions.

    Source

User experience

  • One owner highlights the Rossie's compact design as a standout among GFI System's smaller pedal lineup.

    Source
  • Users appreciate avoiding traditional wah pedals due to size and click-switch issues, enjoying Rossie's digital approach.

    Source
  • Owners who prefer straightforward controls tend to find the Rossie's extensive options overwhelming, favoring simpler alternatives like the Spatial Delivery instead.

    Source
  • Owners appreciate the Rossie's intuitive interface, finding it easy to tweak compared to other filter pedals with more complex setups.

    Source

Comparisons

  • Some owners find Rossie more engaging than Source Audio filters, noting a preference for its sound quality.

    Source
  • Some users find the Earthquaker Spatial Delivery easier to dial in than the Rossie, despite Rossie's broader functionality, due to simpler controls and fewer options.

    Source
  • Users transitioning from the Source Audio Spectrum note the Rossie's ability to replicate classic tron sounds effectively, provided sensitivity is adjusted for instrument level.

    Source

Critic Reviews

GFI System Rossie Multi Filter | Delicious Audio

delicious-audio.com

The GFI System Rossie Filter is a versatile digital pedal that showcases impressive filter capabilities across three distinct modes—Envelope, Step, and Manual. Each mode offers classic filter shapes, giving players a wide range of tonal possibilities. The intuitive interface with an LCD screen enhances usability, while the expression pedal input allows for expressive control. However, some users might find the learning curve steep due to the plethora of options available, and the pedal's size could be a concern for those with limited pedalboard space. Overall, the Rossie Filter proves to be a powerful addition to any musician's arsenal, balancing complexity with quality.

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Artist usage

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See how Cory Wong uses GFI System Rossie Filter

Cory Wong

Guitarist, Composer

Vulfpeck

...
Verified via YouTube

In the attached video, a tour vlog and rig rundown of Cory Wong's setup with his group Cory and the Wongnotes, he shows his pedalboard. At 4:08, he shares his "GFI System Rossie Filter", which is typed on screen and shown on his pedalboard.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use GFI System Rossie Filter, it is most commonly used with the following gear.

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Community setups

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