Gamechanger Audio AUTO Series CHORUS

The Gamechanger Audio AUTO Series CHORUS is a chorus pedal with parameter automation: instead of only turning knobs and leaving them set, the AUTO Series pedals combine classic audio effects with automation driven by the player's own performance¹. Gamechanger Audio describes the series as fusing "classic pedal design with groundbreaking parameter automation"¹. The CHORUS is one of three pedals in the series, released alongside the AUTO Series DELAY and a reverb, and Pedal of the Day noted it "boasts a TON of features and options" for a compact pedal².

At its core it is a modulation pedal with three algorithms, CHORUS, ENSEMBLE and FLANGE, controlled by four knobs: LEVEL, DEPTH, RATE and FEEDBACK². What separates it from a standard chorus is the automation layer: a PITCH Engine that "precisely tracks your note choices and overall instrument timbre"³², plus a TRACK input for routing an auxiliary signal that controls the modulation³.

Algorithms and controls

The pedal keeps its control surface deliberately small. Four knobs, LEVEL, DEPTH, RATE and FEEDBACK, cover the level of the effect, the modulation depth, its speed, and the feedback that turns the chorus toward flanger territory². Three algorithms give the range of sounds:

Pedal of the Day called the four controls "streamlined," a contrast with the feature count underneath them².

The TRACK input and output

The TRACK system is what lets the pedal react to your playing rather than sit at fixed settings. TRACK IN is a 3.5mm (1/8") TRS socket for routing a clean instrument signal into the pedal for dynamics and pitch analysis⁴. On the CHORUS specifically, Pedal of the Day describes it as an input "for routing an auxiliary signal for controlling the modulation"².

Two details matter for pedalboard planning:

• TRACK IN works even with nothing plugged into the main audio inputs, which Gamechanger Audio points out is useful for Eurorack integration⁴.
• TRACK OUT passes the TRACK IN signal through to another AUTO Series pedal, and with no cable in TRACK IN it outputs the dry mono or stereo audio input instead⁴.

That makes the TRACK connections a way to chain AUTO Series pedals together, sharing one analysis signal across the set⁴⁵.

Stereo routing

The pedal handles both stereo and mono signal processing, and stereo routing works with regular TS mono cables or TRS stereo cables²⁵. In practice that means you can wire it for stereo with the cables already on your board; no special TRS-only cabling is required.

MIDI and USB-C

The USB-C port accepts MIDI Protocol 1.0, and Gamechanger Audio says future firmware updates will be possible over the same connection⁴. Pedal of the Day lists the USB-C input for MIDI and future updates among the CHORUS's features². There is also a MIDI/CLK input for MIDI clock or analog trigger sync for time based effects²⁵.

For firmware updates, Gamechanger Audio's support instructions call for a USB-C cable connecting the pedal to a computer, plus a 9V DC center negative supply rated at 250 mA or higher⁶⁷.

Power

The pedal runs on a standard 9V DC center negative power supply rated for at least 250 mA⁴²⁵. It can also be powered over USB-C at 5V and 1A⁴.

Where it came from

The AUTO Series is Gamechanger Audio's pedal line that includes the AUTO Series CHORUS, a compact effects pedal⁴. The maker's product pages for the series describe it as a fusion of classic audio effects and parameter automation¹⁴. Powering the pedals calls for a supply delivering at least 250 mA⁶²⁵.

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