GFI System Duophony Parallel Signal Blender Pedal

£299.00

This is a New GFI System Duophony Parallel Signal Blender Pedal from GFI System, listed in Specialist Effects Pedals on Just Pedals. Read More below.

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The GFI System Duophony is a mono/stereo parallel blender pedal of unparalleled depth and flexibility, allowing the user to blend two separate signal chains of any kind in myriad different ways. Its rotary touch slider mix control is both intuitive and eye-catching, requiring but a swipe of the finger to tweak the blend ratio of Duophony’s X and Y loops. Each loop is further equipped with dedicated, easily-accessible controls — including gain, dry level, phase, trails (for reverbs and delays), and there’s even an onboard modulation engine with its own expansive control set!

Duophony offers three parallel blend modes for its loops, two routing options (parallel or series), and 16 presets organised into eight banks. Besides the touch slider on the face of the pedal, each of Duophony’s knobs is also a button; allowing for quick access to any parameter while keeping the user interface clean and simple.

Options for outboard expression, aux switching, and MIDI control round out Duophony's exhaustive feature-set — making it the ultimate effects blending workstation for the dedicated sonic adventurer.

Key Features

  • True stereo on all (inputs, outputs, and FX loops) signal paths.
  • Parallel or series routing modes.
  • 3 parallel blend modes : XY mix, Y plus [X], and X plus [Y].
  • 16 presets.
  • Fully adjustable dry signal level.
  • Phase invert function on loop X.
  • Individual gain control for each loop.
  • Bypass function with or without trails.
  • Expression pedal and aux switches control input.
  • MIDI input.
  • Full-featured modulation engine.

Specifications

  • Input Impedance: 1 MOhm
  • Output Impedance: 500 Ohm
  • Input/Send/Return Jacks: 1/4" TRS
  • Output jJacks: 1/4" TS
  • Expression/Aux Input Jack: 1/4" TRS
  • MIDI Input Connector: 1/8" TRS
  • USB Connector: Type C
  • Dimensions: 9.7 x 12 cm (3.8" x 4.7")
  • Power Requirements : 9V DC / 150 mA, centre-negative plug (power supply not included)

Related videos

Brand

GFI System

In the current JustPedals catalogue, GFI System is represented by Delay & Reverb Pedals, Reverb Pedals and EQ Pedals. Current listings include Skylar Reverb, Rossie Multi-Filter and s ENIEQMA Dual Channel EQ. That makes the range relevant to players looking for time-based effects and ambience, plus modulation and movement. Check each model for its exact circuit or processing platform, controls, power requirements and connections, particularly where the catalogue includes both pedals and supporting gear.

Category

Specialist Effects Pedals

Specialist effects alter the signal in ways that do not sit cleanly inside one established family. They may use granular processing, frequency shifting, resonators, freeze or sustain, bit reduction, ring modulation, feedback networks or combinations of several techniques. The relevant distinction is the underlying process, its tracking or latency, and how completely the dry signal can be blended or replaced.

Tags

MIDI

MIDI sends, receives or responds to Musical Instrument Digital Interface messages rather than carrying instrument audio itself. Program changes can recall presets, continuous controllers can move parameters and MIDI clock or transport messages can synchronise timing. Check the connector or USB method, channel and message support, clock direction, latency and whether the device needs a separate MIDI host or adapter. MIDI control is powerful, but compatibility depends on the exact messages each product understands.

Presets

Preset-capable products can store and recall effect settings, signal paths or control assignments. The useful differences are the number of locations, whether footswitches or MIDI can recall them, what parameters are saved, how quickly they change and whether trails continue between settings. Check editing, backup, firmware, expression and USB requirements, and confirm that the preset system covers the parameters you need rather than assuming every control is recalled.

Stereo

Stereo products provide separate left and right audio paths, which may widen modulation, preserve independent delays or route a pedalboard into two amplifiers or a mixer. Input and output behaviour is not always symmetrical: some units sum a stereo input, while others create stereo from a mono source. Check whether the effect collapses safely to mono, how the dry signal is routed, the socket format and the destination’s panning and phase requirements.