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GFI System - ROSSIE Filter
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GFI System - ROSSIE Filter GFI System - ROSSIE Filter GFI System - ROSSIE Filter

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GFI System - ROSSIE Filter


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The GFI System - ROSSIE Filter has the quintessential filter algorithms in a small and easy-to-use digital package. The intuitive interface coupled with the LCD screen lets the user easily control some great sounding delays. Stereo or mono In/Out available with the correct TRS adaptors. An optional external expression control can be added to on the fly control the delay parameters. As always, great stuff from the crew at GFI Systems.

From GFI: 

Rossie is a dynamic multi-filter pedal, encompassing 3 essential tone-enriching filter effects:

  • Envelope Filter - a colourful resonant filter that follows your picking dynamics.
  • Step Filter - a groovy, arpeggiated filter with fully adjustable steps.
  • Manual Filter - great for static tone shaping or sweep-able wah-like effect using an expression pedal.

Each filter mode offers 4 filter types: lowpass, bandpass, highpass, and peaking. Sweep range and resonance width are also adjustable. And on top of all of these, a dedicated Mix knob allows blending of wet and dry signal, this gives you total control of how much filtering effect is imparted on your guitar or bass signal.


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We take the time to set up every new guitar, mando, bass, uke, or banjo for every player, whether it was purchased here in Lawrence, Kansas or on our website. Large retailers are content to ship you a guitar right off of the warehouse shelf, while we take pride in the fact that your new instrument will be set up to be truly ready to play - for you.

Call us at 800-747-9980 or send us an email at info@massstreetmusic.com - we're here to help! All of us at Mass Street Music are musicians, and we're dedicated to helping you find exactly what you're looking for. You can also check out our Staff Page if you'd like to email one of us directly.

Any new or used gear $25 or over gets shipped to you for FREE via our favorite carrier, Fed Ex – ground, to all 'lower 48' U.S. states and we offer a 7 day return policy. Alaska and Hawaii, expedited shipping, international shipping are more. We also ship around the globe. Read more about our Shippping.