Why Shop With Us?

Free Shipping

Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).

Orders placed before 3 p.m. ET usually ship the same business day.

Learn More

2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details

We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us

Contact Us

Call Now
800-449-9128

Hablamos Español

866.226.2919

Let's Chat
Live Chat

Hours:

MON - FRI 6 AM – 7 PM PT

SAT 7 AM – 6 PM PT

SUN 8 AM – 5 PM PT

Track your order Returns FAQs Make a Card Payment
Empty Cart Icon

Your Cart Is Empty

Sign In < Continue Shopping
Why Shop With Us?
 Shop Rocktober! Shop deals & special financing*. Call 888-688-0208 or chat for exclusive savings. Rocktober! Deals & special financing*
RewardsBlogHelp

Contact Us

800-449-9128
Cart
Back
Shop by Category
Hot Deals

Help | Call or Chat

 Track your orderReturnsFAQsMake a card paymentWhy shop with us? RewardsBlogHelp
Home Amplifiers & Effects Effects Effects Pedals Harmony & Octave Effects Pedals

Harmony & Octave Effects Pedals

(631 Items)
Clear All
NUX Tutti Polyphonic Octave Pedal -
NUX Tutti Polyphonic Octave Pedal -
0 of 5 stars
Product Price  $99.00
Old Blood Noise Endeavors MTET MIDI to Expression Translator
Old Blood Noise Endeavors MTET MIDI to Expression...
0 of 5 stars
Product Price  $119.00
Electro-Harmonix KEY9 Electric Piano Machine Guitar Pedal
Electro-Harmonix KEY9 Electric Piano Machine Guitar Pedal
3.0 of 5 stars (7)
Product Price  $259.50
Electro-Harmonix B9 Organ Machine Guitar Effects Pedal
Electro-Harmonix B9 Organ Machine Guitar Effects Pedal
4.0 of 5 stars (62)
Product Price  $259.50
Death By Audio Total Sonic Annihilation 2 Forced Feedback Loop Noise Effects Pedal -
Death By Audio Total Sonic Annihilation 2 Forced Feedback...
0 of 5 stars
Product Price  $250.00
Source Audio C4 Synth Effects Pedal
Source Audio C4 Synth Effects Pedal
0 of 5 stars
Product Price  $269.00
Electro-Harmonix Nano POG Polyphonic Octave Generator Guitar Effects Pedal
Electro-Harmonix Nano POG Polyphonic Octave Generator...
4.0 of 5 stars (4)
Product Price  $230.40
Electro-Harmonix Intelligent Harmony Machine Guitar Effects Pedal -
Electro-Harmonix Intelligent Harmony Machine Guitar Effects...
0 of 5 stars
Product Price  $241.50
Electro-Harmonix Super Space Drum Analog Drum Synth Pedal
Electro-Harmonix Super Space Drum Analog Drum Synth Pedal
0 of 5 stars
Product Price  $136.10
DOD Gonkulator Ring Modulator Effects Pedal
DOD Gonkulator Ring Modulator Effects Pedal
5.0 of 5 stars (5)
Product Price  $149.99
MXR M103 Blue Box Effects Pedal
MXR M103 Blue Box Effects Pedal
4.0 of 5 stars (35)
Product Price  $99.99
Strymon Conduit MIDI Hub
Strymon Conduit MIDI Hub
0 of 5 stars
Product Price  $149.00
JHS Pedals 3 Series Harmonic Trem Effects Pedal
JHS Pedals 3 Series Harmonic Trem Effects Pedal
0 of 5 stars
Product Price  $99.00
JHS Pedals Double Dragon Lo-Fi Octave Pedal -
JHS Pedals Double Dragon Lo-Fi Octave Pedal -
0 of 5 stars
Product Price  $179.00
NUX A/B Roll Octave and Loop Pedal -
NUX A/B Roll Octave and Loop Pedal -
0 of 5 stars
Product Price  $89.00
Catalinbread Perseus Dio Synth Sub-Octave/Fuzz Effects Pedal
Catalinbread Perseus Dio Synth Sub-Octave/Fuzz Effects...
0 of 5 stars
Product Price  $184.99
Warm Audio RingerBringer Ring Modulator Effects Pedal
Warm Audio RingerBringer Ring Modulator Effects Pedal
0 of 5 stars
Product Price  $218.99
Spaceman Effects Saturn VI Harmonic Booster Effects Pedal
Spaceman Effects Saturn VI Harmonic Booster Effects Pedal
0 of 5 stars
Product Price  $179.00
DOD Meatbox Subsynth Guitar Effects Pedal
DOD Meatbox Subsynth Guitar Effects Pedal
5.0 of 5 stars (1)
Product Price  $169.99
MXR M306 Poly Blue Octave Effects Pedal -
MXR M306 Poly Blue Octave Effects Pedal -
5.0 of 5 stars (5)
Product Price  $235.99
Electro-Harmonix Mainframe Bit Crusher Effects Pedal
Electro-Harmonix Mainframe Bit Crusher Effects Pedal
0 of 5 stars
Product Price  $203.20
Meris MIDI I/O
Meris MIDI I/O
0 of 5 stars
Product Price  $89.00
Meris Enzo Synthesizer Effects Pedal
Meris Enzo Synthesizer Effects Pedal
5.0 of 5 stars (1)
Product Price  $299.00
Keeley Synth-1 Wave Generator Guitar Effects Pedal
Keeley Synth-1 Wave Generator Guitar Effects Pedal
0 of 5 stars
Product Price  $179.00
Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter/Harmony Effects Pedal
Electro-Harmonix Slammi Plus Polyphonic Pitch...
3.0 of 5 stars (1)
Product Price  $192.30
EarthQuaker Devices Bit Commander V2 Pedal
EarthQuaker Devices Bit Commander V2 Pedal
5.0 of 5 stars (1)
Product Price  $199.00
EarthQuaker Devices Organizer V2 Polyphonic Organ Emulator Effects Pedal
EarthQuaker Devices Organizer V2 Polyphonic Organ Emulator...
3.5 of 5 stars (2)
Product Price  $199.00
Eventide PitchFactor Harmonizer Guitar Effects Pedal
Eventide PitchFactor Harmonizer Guitar Effects Pedal
4.5 of 5 stars (12)
Product Price  $499.00
BOSS SY-200 Synthesizer Effects Pedal -
BOSS SY-200 Synthesizer Effects Pedal -
5.0 of 5 stars (1)
Product Price  $337.99
Electro-Harmonix Pico Intelligent Harmony Machine Effects Pedal -
Electro-Harmonix Pico Intelligent Harmony Machine Effects...
0 of 5 stars
Product Price  $149.00
TC Electronic Sub 'N' Up Mini Octaver Effect Pedal
TC Electronic Sub 'N' Up Mini Octaver Effect Pedal
5.0 of 5 stars (4)
Product Price  $91.90
TC Electronic Nether Octaver Effects Pedal
TC Electronic Nether Octaver Effects Pedal
4.0 of 5 stars (3)
Product Price  $36.90
TC Electronic Quintessence Harmony Effects Pedal
TC Electronic Quintessence Harmony Effects Pedal
3.5 of 5 stars (4)
Product Price  $129.00
TC Electronic Sub 'N' Up Octaver Effects Pedal
TC Electronic Sub 'N' Up Octaver Effects Pedal
3.5 of 5 stars (11)
Product Price  $119.00
Used Electro-Harmonix PICO POG Effect Pedal
Used Electro-Harmonix PICO POG Effect Pedal
Product Price  $184.99
Excellent Condition
Used MXR POLY BLUE OCTAVE Effect Pedal
Used MXR POLY BLUE OCTAVE Effect Pedal
Product Price  $145.99
Excellent Condition
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter Effect Pedal
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter...
Product Price  $164.99
Excellent Condition
Used Mooer Pitch Box Effect Pedal
Used Mooer Pitch Box Effect Pedal
Product Price  $41.99
Excellent Condition
Used Electro-Harmonix B9 Organ Machine Effect Pedal
Used Electro-Harmonix B9 Organ Machine Effect Pedal
Product Price  $164.99
Excellent Condition
Used BOSS SY-1 Synthesizer Effect Pedal
Used BOSS SY-1 Synthesizer Effect Pedal
Product Price  $129.99
Excellent Condition
Used 2020s TC Electronic Quintessence Harmony Effect Pedal
Used 2020s TC Electronic Quintessence Harmony Effect Pedal
Product Price  $134.99
Excellent Condition
Used Electro-Harmonix PICO POG POLY OCTAVE GENERATOR Effect Pedal
Used Electro-Harmonix PICO POG POLY OCTAVE GENERATOR Effect...
Product Price  $189.99
Excellent Condition
Used Electro-Harmonix Pitch Fork Polyphonic Pitch Shifting Effect Pedal
Used Electro-Harmonix Pitch Fork Polyphonic Pitch Shifting...
Product Price  $169.99
Excellent Condition
Used BOSS VE22 Effect Pedal
Used BOSS VE22 Effect Pedal
Product Price  $349.99
Excellent Condition
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter Effect Pedal
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter...
Product Price  $164.99
Excellent Condition
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter Effect Pedal
Used DigiTech The Drop Polyphonic Drop Tune Pitch-Shifter...
Product Price  $169.99
Excellent Condition
Used Pigtronix Mothership 2 Effect Pedal
Used Pigtronix Mothership 2 Effect Pedal
Product Price  $99.99
Excellent Condition
Used BOSS PS6 Harmonist Effect Pedal
Used BOSS PS6 Harmonist Effect Pedal
Product Price  $117.99
Excellent Condition
Used Electro-Harmonix INTELLIGENT HARMONY MACHINE Effect Pedal
Used Electro-Harmonix INTELLIGENT HARMONY MACHINE Effect...
Product Price  $164.99
Excellent Condition
Used Electro-Harmonix Ravish Sitar Effect Pedal
Used Electro-Harmonix Ravish Sitar Effect Pedal
Product Price  $179.99
Excellent Condition
Used BOSS OC-5 Octave Effect Pedal
Used BOSS OC-5 Octave Effect Pedal
Product Price  $134.99
Excellent Condition
Used Electro-Harmonix Guitar Mono Synth Effect Pedal
Used Electro-Harmonix Guitar Mono Synth Effect Pedal
Product Price  $109.99
Excellent Condition
Used Electro-Harmonix Pitch Fork Polyphonic Pitch Shifting Effect Pedal
Used Electro-Harmonix Pitch Fork Polyphonic Pitch Shifting...
Product Price  $135.99
Excellent Condition
Used BOSS SY-1 Effect Pedal
Used BOSS SY-1 Effect Pedal
Product Price  $149.99
Excellent Condition
Used Electro-Harmonix Pog2 Polyphonic Octave Generator Effect Pedal
Used Electro-Harmonix Pog2 Polyphonic Octave Generator...
Product Price  $269.99
Excellent Condition
Used 2026 EarthQuaker Devices EQDRAIN Rainbow Machine Polyphonic Pitch Mesmerizer Effect Pedal
Used 2026 EarthQuaker Devices EQDRAIN Rainbow Machine...
Product Price  $250.99
Excellent Condition
Used 2020s BOSS OC-5 Octave Effect Pedal
Used 2020s BOSS OC-5 Octave Effect Pedal
Product Price  $134.99
Excellent Condition
Used Behringer Octave Divider Effect Pedal
Used Behringer Octave Divider Effect Pedal
Product Price  $49.99
Excellent Condition
Used MXR M306 Poly Blue Octave Effect Pedal
Used MXR M306 Poly Blue Octave Effect Pedal
Product Price  $159.99
Excellent Condition
Used Electro-Harmonix SYNTH9 Synthesizer Effect Pedal
Used Electro-Harmonix SYNTH9 Synthesizer Effect Pedal
Product Price  $169.99
Excellent Condition