Electro-Harmonix HOG2 Harmonic Octave Generator Pedal

Octave Generator Pedal with 10 Voices, Dual Envelope Generators, MIDI Control, and Included Expression Pedal
Electro-Harmonix HOG2 Harmonic Octave Generator Pedal image 1
Electro-Harmonix HOG2 Harmonic Octave Generator Pedal image 1
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Electro-Harmonix HOG2 Harmonic Octave Generator Pedal
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A Classic Harmonic Effect from electro-harmonix!

The Electro-Harmonix HOG2 takes E-H's harmonic octave generation effect to new levels of creativity. You can unveil entirely new tones with anything from extreme sub bass to powerful multi-octave chords, including fifth and third intervals. Dedicated Filtering and envelope control, with numerous setup options, make the HOG2 easy to personalize. And no special pickup is required, and updated algorithms remain glitch-free even at extreme settings. And with the included expression pedal, you'll be pushing sonic boundaries with the Electro-Harmonix HOG2 harmonic octave generator!

electro-harmonix HOG2 Harmonic Octave Generator Pedal at a Glance:
  • 10 faders control 10 intervals of pitch
  • Seven unique expression modes, plus an included expression pedal
  • Dual envelope generators let you fine-tune the effect
10 faders control 10 intervals of pitch

Simply put, the Electro-Harmonix HOG2 creates harmonics that weren't present in your guitar's signal originally. 10 intervals of pitch can be mixed by using 10 surface faders, which may then be played polyphonically with perfect tracking:

  • 1 octaves down
  • 2 octaves down
  • Original pitch
  • One Fifth up
  • 1 octave up
  • 1 octave + a perfect fifth
  • 2 octaves up
  • 2 octaves up + a major third
  • 3 octaves up
  • 4 octaves up
Seven unique expression modes, plus an included expression pedal

Seven unique expression modes are accessible via the Exp button, expression pedal, and MIDI. Octave bends, step bends, volume control, user defined Wah-Wah, Filter control, plus two unique freeze modes. With Freeze Gliss mode, your expression pedal freezes a chord while letting you play over it having your frozen notes gliss to meet your new notes. The Freeze Volume freezes a chord allowing you to control its volume, with an expression pedal, as you play on top of it. The best part? The expression pedal is included with the HOG2!

Dual envelope generators let you fine-tune the effect

Dual Envelope generators that work with both the higher and lower frequency ranges let you create effects that swell and decay with exceptional movement. For example, you can make the sub-octave effects "full on", while making the higher harmonics fade in etherically. 12dB per octave 2-pole lowpass filter and resonance controls manipulate the tone while also being a critical element within the expression modes.

Electro-Harmonix HOG2 Harmonic Octave Generator Pedal Features:
  • 10 faders control 10 pitch intervals, generating harmonics not present in your original signal
  • Expression pedal for real-time control is included
  • Dual envelope generators let you shape the attack and decay of the harmonic generation
  • Seven unique expression modes let you add movement and dimension to the effect
  • Power supply included
Expand your guitar's harmonic reach with the Electro-Harmonix HOG2!

Additional Media

Electro-Harmonix HOG2 Pedal Demo by Sweetwater's Daniel Fisher
NAMM News: Electro-Harmonix HOG2 and HOG2 Foot Controller

Tech Specs

Pedal Type Polyphonic Harmonic Octave Generator
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Height 4.2"
Width 13"
Depth 12"
Weight 5.4 lbs.
Power Supply Included Yes
Manufacturer Part Number HOG2

Customer Reviews

Based on 6 reviews
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Excellent Effects

I have dozens of effects processors, pedals, etc. and I can only say: If I'd known earlier what this thing does, I would have bought it much sooner. First, it comes with a "next step" style CV / exp pedal. Very different from traditional pedals but it has a fantastic unique action. Remember on HOG2 that expression pedal can do any of the following: *Bend / whammy (whole step or octave) *Volume *Sustain / gliss *Wah / filter And all these effects are top notch-- the wah & filter hold their own against the MF-101, Sonuus Wahoo and Cry Babies. Considering it also has sync and editability via midi (so cool to send LFOs to the different harmonics), it's a full-on studio tool. Sounds great on synths and percussion as well as the obvious guitar and bass uses. Getting up the guts to try it on vox. . . ;-) Seriously great piece of gear-- get it.


Amazing pedal. Compared to the Micro Pog and Pog 2, the attack is much smoother, and it blends super nicely.
Music background: Hobbyist

Buy it before you buy anything else

The first day I spent messing around with the HOG2 was greeted with disappointment. I was completely unable to find any settings that seemed interesting. I got more familiar with it the second day, and things took a far more positive turn. As I probed for some settings to store on the foot controller, I found all sorts of interesting sounds, from flute to xylophone to synth. Although it probably isn’t a true synthesizer from an engineering standpoint - I doubt there are any oscillators in it, for instance. Nevertheless, from a player’s point of view, the HOG2 adds selected harmonics, controls the envelope, and filters the output, and therefore should be considered a synthesizer in every functional standpoint that matters. The price of the HOG2 may make some reluctant, but, given the degree to which it functions as a synthesizer, one is getting off cheap in comparison to a Roland guitar synth. The only cheaper route for guitar synthesis is a Line 6 FM4, but those are monophonic with occasionally questionable pitch-recognition. The HOG2 is fully polyphonic with exceptional clarity for each note strummed. I really enjoy playing chords with my flute sounds, for instance. Whatever process of digital modulation the HOG2 uses, there is no detectable lag time between playing notes and hearing notes and glitchy warbles simply do not occur. The HOG2 can add parallel notes in harmonizer-like fashion, as one so desires. Alternatively, I have no idea what a “spectral gate” is, but when it’s on, it combines together all the notes into a single more complex timbre with added harmonics and overtones (something I’ve fiddled with on my own with combinations of harmonizers and ring modulators). The HOG2 is a culmination of everything Electro-Harmonix has learned from its own Superego, Micro Synth, and POG2. But the composite has its own unique character, and should not be thought of as simply a multi-effect. The Micro Synth remains interesting for its more dramatic filter sweep, and the POG2, for whatever reason, still produces a better organ sound. Nevertheless, if a guitar player is looking to maximize their access to a wide range of timbres, the HOG2 is priority number one. The foot controller is absolutely essential for storing all the many favorite settings one will accumulate. My foot controller is actually filled up already with my hundred most favorite settings. The expression pedal is perhaps not as essential as the foot controller, but very desirable and very recommended all the same.
Music background: Hobbyist

unique and versatile pedal

The range of harmonics that this pedal can generate is impressive. The ability to add the UN effected guitar into the mix adds a lot of possibility. The expression pedal included is something in its own right. Very sensative and adjustable. Although it is hard to keep in one spot as its not a hinged rocker like normal expression pedals. Instead its essentially a rockable brick that effects parameters via orientation sensors buoy into it. Pretty cool minus the sliding around. The plethora of different modulations the exp. Pedal can manipulate really create a lot of possibilities. Construction is nothing amazing. In my experience nobody builds heavy duty stuff anymore outside of Moog music.
Music background: musician, engineer, producer.

Paradigm destroying unit

This is an unbelievably good pedal for sound shaping. Combining it with the Electro Harmonics 8-Step and MIDI clock sync is a REALLY good idea for exploring other sonic universes. Caution when combining with external effects, because this can cause you to call in sick to work ;-) Suggestions: Next version, expand the synthesizer options just a wee bit more.. Oscillator? Wave shape? Pros: Incredible tracking, wide variety of tones you can produce. Expression pedal included. Cons: External preset pedal (optional, but pretty much necessary) is way overpriced. Spectral gate, Exp. Mode and Exp. buttons feel loose and flimsy.
Music background: Guitarist, Engineer
See also: Harmonizer Pedals, Electro-Harmonix, Electro-Harmonix Harmony Processors