Endorphin.es Autopilot Dual-Channel Autotuner of Oscillators 

Snap-into-tune Your Eurorack Oscillators Instantly
Autopilot brings studio-grade pitch tuning to your Eurorack setup, letting you lock any VCO to perfect A (or C) notes with a single button press—no more manual tweaking or drifting pitch. Its dual-channel design means you can tune two oscillators independently or in harmony, so chords and intervals stay spot-on. Compact and lightning-fast, Autopilot frees you to focus on musical ideas instead of playing pitch-perfect technician.
 
Overall Condition:
Excellent pre-owned: the black anodized faceplate shows no visible scratches or wear, button LEDs and switches operate crisply, and the module functions exactly like new.
Included:
Endorphin.es Autopilot Eurorack module (4 HP)
Not Included:
Eurorack power cable, panel screws; sold “as-is.”
 
Features
Dual-Channel Autotuner: Two independent tuning circuits—tune two oscillators at once or split functions across your patch endorphin.es
Revolutionary Algorithm: Rapid, accurate pitch detection even in low frequencies—locks to nearest A-note by default, with firmware-selectable C-note mode modulargrid.net
Simple Operation: Single-tap “Tune” button per channel; long-press disables tuning and returns to raw CV input endorphin.es
Compact Footprint: 4 HP width, 32 mm depth; draws only 20 mA on +12 V and 10 mA on –12 V endorphin.es
CV-In/CV-Out Routing: Insert between your pitch CV source and oscillator pitch input; reference oscillator or sequencer note into Autopilot’s second input
 
Why We Love It: With proven Endorphin.es build quality and precision pitch-tracking, it’s the quickest path to rock-solid Eurorack tuning at a fraction of the cost of standalone hardware tuners.
 
Frequently Asked Questions
How do I patch it?
Insert the module between your pitch-CV source (e.g., sequencer) and the oscillator’s 1 V/oct input; patch your reference note (A or C) into the “Ref In” jack.
Can I switch tuning reference?
V2 firmware adds a C-note (261.63 Hz) mode—hold both buttons at power-up to select between A (440 Hz), A (432 Hz), or C (261.63 Hz). modulargrid.net
Will it handle complex waveforms?
Yes—Autopilot’s advanced algorithm locks quickly on both sine and harsher waveforms, especially in low registers where other tuners struggle.
Does it work in stereo?
While each channel is mono, you can tune two oscillators simultaneously (e.g., left/right voices) for stereo patches.