PedalBro

Pitch Shifter · Electro-Harmonix

Electro-Harmonix Intelligent Harmony Machine

A compact pitch shifter that generates harmonies in musically correct intervals determined by the selected key. You set the key and interval, then play to hear the harmony added to your signal.

  • 9V DC · center −
  • 26 mA
New
from $149
Used (asking)
from $144

The rundown

Highlights

  • Generates harmonies across all keys with accurate musical intervals
  • Compact Pico format design suited for pedalboards
  • Tight tracking of input signal
  • Expression input for dynamic control
  • Runs on standard 9V DC power

Best for

Guitarists seeking a compact harmony generator that fits on space-constrained pedalboards and works across multiple keys.

Professional reviews

What the press rated it. We link to each review; read the full piece for the details.

Quick facts

Power
9V DC
Current draw
26 mA
Polarity
Center negative
Dimensions
71.6 × 114.3 mm
Status
In production

Where to buy Electro-Harmonix Intelligent Harmony Machine

$149 lowest new price · Reverb

Used listings asking $144–$209.49, median $199 (8 listings). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$144View
ReverbNew$149View
ReverbUsed$149View
ReverbNew$149View
ReverbUsed$183.38View
ReverbNew$193.57View
ReverbUsed$199View
ReverbUsed$199View
ReverbUsed$199View
ReverbNew$228.38View

Prices last checked 20 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power does the Intelligent Harmony Machine require?

The Electro-Harmonix Intelligent Harmony Machine runs on 9V DC at 26 mA with center-negative polarity.

How big is this pedal?

The Intelligent Harmony Machine measures 71.6 x 114.3 mm, making it part of Electro-Harmonix's compact Pico range.

Does it have an expression input?

Yes, the Intelligent Harmony Machine includes an expression input for dynamic control.

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Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.