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GFI System Rossie Multi-Filter Pedal



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Product Description

The celebrated filter algorithms from GFI System's flagship Synesthesia pedal have been brought to life as an expanded, standalone stompbox! Encompassing 3 essential tone-enriching filter effects, the Rossie is remarkably dynamic and easily spices up your guitar or synth tones with some intriguing, spellbinding sounds.

With a compact enclosure, a tactile set of controls, a bright LCD screen and dual footswitches — the GFI System Rossie offers plenty of control but won't overwhelm you either. It's the perfect pedal for musicians looking to step out of their comfort zone and expand their sonic horizons!

3 Filter Effects

  • Envelope Filter — A colourful, resonant filter that follows and responds to 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 effects using an expression pedal.

Each of these modes offers 4 filter types: low-pass, band-pass, high-pass and peaking. Sweep range and resonance width are also adjustable, and on top of all of these, a dedicated mix knob allows blending of the wet and dry signals. This gives you total control of how much filtering effect is imparted on your guitar, bass or synth signal. Smart!

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Key Features

  • 2 presets, accessible via right-hand footswitch.
  • 3 selected filter algorithms from GFI System's Synesthesia pedal.
  • Mono input and output for simple routing.
  • Expression pedal and tap-tempo input for increased effect control.
  • Momentary action supported.


  • Input Impedance: 1 MOhm
  • Output Impedance: 1K Ohm
  • DAC / ADC Resolution: 24 bits
  • Current Consumption: ~110 mA
  • Weight: 0.6 kg (1.6 lbs)
  • Dimensions: 12 (L) x 7.2 (W) x 5.5 (H) cm
  • Power Source: 9VDC (Centre Negative)
Elliot Stent author picture

Written by Elliot Stent

Customer Reviews


1 review





Mr Lukasz Ilnicki30th Aug 2021

great sound versatile for bass and guitar (if they can make video of rossie pedal with the bass guitar please)

Value 5Looks 5Durability 5Sound 5

Finance available at checkout for orders £300+

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At the end of the checkout you'll be taken to the V12 Finance web site. This is where your finance application is processed. Assuming your application is accepted you'll be able to place your deposit and confirm your order right there.

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Andertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.