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Source Audio Gemini

Source Audio GEMENI Chorus

Advanced Stereo Chorus

Float away with the liquid, swaying effects of this state-of-the-art stereo chorus pedal. The GEMINI Chorus offers three types of deep, hypnotic chorus. Classic mode creates a single voiced effect that conjures subtle and creamy tones from the first wave of 1970s chorus pedals. The thick and rich Dual Chorus provides a smooth, yet animated double voiced effect. The lush and spacious Quad chorus recaptures that ‘80s vibe with its less than subtle rack system sound. Once you’ve found your chorus, dial in the sweet spot with the onboard Mix and Tone controls.


Main Features:

• Chorus effects pedal

• 3 flavors of Chorus

o Classic: classic chorus effect with one modulated clone signal 

o Dual: dual-voiced chorus for more animated effect

o Quad: combines the input signal with 4 additional voices that are modulated differently - for deep and lavish chorus as used in the 80s

• Mix knob for adjusting the wet / dry signal balance from 100% wet to 100% dry - for creating Chorus as well as Vibrato sounds

• 128 presets accessible via MIDI

• Deep customization features accessible via Source Audio Neuro App and Desktop Editor

• Stereo Inputs and outputs - for multiple advanced routing options

• Mini USB Port for PC connectivity (Windows and Mac compatible) and remote control

• 3.5 mm control port - for connecting compatible Source Audio control devices 

• Selectable Relay True or Buffered Bypass Switching

• Included 3.5 mm to 6.3 mm TRS cable to connect to mobile device

• Powered by (included) 9V DC power supply

(2.1 mm plug, center -, 165 mA current draw)


The GEMINI includes three basic effect types, with more effects available in the Neuro mobile app. 

• Classic: The Classic Chorus effect combines the original dry input signal with a single modulating clone signal, creating the simple sound of two voices in unison. It is very similar to the classic flanger effect except that the delay time is relatively long in a chorus effect and relatively short in a flanger effect. 

• Dual: The Dual Chorus effect is a dual-voiced chorus that produces a more animated chorus effect than the single-voiced Classic Chorus. 

• Quad: The Quad Chorus effect combines the dry input signal with four additional voices that modulate in different ways, creating a deep and lavish chorus sound that was in heavy use in the late 80s.


Additional effect types can be loaded into the GEMINI using the Neuro App on your mobile device (iOS and Android). The GEMINI Chorus is compatible with Source Audio’s Phaser and Flanger effects, so it is possible to load chorus, phaser, and flanger effects on the GEMINI at the same time.


Out of the box, the GEMINI offers tremendous tonal range, but beneath the hood resides a much deeper level of power and flexibility. Every pedal in the One Series line is compatible with the Neuro Mobile App (a free download for iOS and Android). Link the GEMINI to the Neuro App and access Source Audio’s free library of additional phaser, flanger, and chorus algorithms - each can be downloaded directly to your GEMINI Chorus. The Neuro App also offers an extended set of adjustable parameters including Feedback, Output Level, embeddable Tremolo, a Parametric EQ, Advanced Signal Routing and more. Plus, every One Series pedal is fully MIDI compatible when coupled with the Neuro Hub (formerly Soundblox Hub), giving you the power to save up to 128 presets.


Job one in the development of the Source Audio One Series modulation pedals - the GEMINI Chorus, LUNAR Phaser, and MERCURY Flanger - was to create three great sounding, flexible, and easy-to-use pedals. Out of the box, that’s exactly what they are - plug ‘em in, select from the three onboard flanger, phaser, or chorus engines and make beautiful music… simple. But there is much more here than meets the eye (and ear) - the truly “Big Idea” behind our One Series modulation pedals was to give musicians a second, far deeper, set of options and editing tools with which to craft the perfect tone. The Neuro Mobile App is a free download for iOS and Android. The Neuro basically gives you access to the effects of all three pedals, so when you buy any one of the LUNAR Phaser, MERCURY Flanger or GEMINI Chorus, you're essentially buying all three. The Neuro Editors offer a huge collection of chorus, flanger, and phaser engines as well as an expanded set of editing parameters. After editing your preset, burn it directly to the pedal and access it without reconnecting the Neuro App.