Free shipping on orders over $100

Speak to an expert:605.348.6737

Mon–Fri, 9AM–6PM MT

Sat 9AM–5PM MT

Electro-Harmonix

Electro-Harmonix Mod 11 Modulator Pedal

Hurry, only 2 items left in stock!

$176.00

Secure Checkout

Pickup available at 2520 W Main St

Usually ready in 24 hours

14-day returns

Changed your mind? Return it undamaged within 14 days.

Fully insured shipping

Ships from Rapid City, SD. Free on orders over $100.

11,000+ five-star reviews on Reverb

Trusted by players nationwide since 1963.

Ships same or next day

Order confirmed fast. Tracking sent immediately.



These brand new EHX mod 11 Modulator pedals can be seen in our Rapid City, SD showroom.

Buy risk free with our 14 day - full refund, less shipping, return policy. Check out our shop policies for more details.

The EHX Mod 11 is packed with 11 different modulation effects that range from classic to exotic plus advanced functionality all in a compact pedal. It gives you access to powerful yet intuitive "hidden" parameters accessible through its Secondary Knob Mode which let you take even greater control over its effects.


The Mod 11's modulation effects are: 

  • 1. TREM: Tremolo modulates your signal's volume. Selectable modes allow your playing envelope to control modulation rate or depth.
  • 2. HARM: Harmonic tremolo. The signal is split into high and low frequency bands and modulated between the two. Selectable modes allow your playing envelope to control modulation rate or depth.
  • 3. VIBR: Vibrato modulates your instrument's pitch. Selectable modes allow your playing envelope to control modulation rate or depth.
  • 4. UNI: pays homage to the classic Univibe. Includes 'Chorus' and 'Vibrato' modes plus added overdrive
  • 5. CHORUS: Warbling, doubling, chorus effect like the EHX Small Clone. Extra modes include tri-chorus and bass chorus effects
  • 6. ROTARY: Rotary speaker cabinet simulation. Extra functionality includes overdrive plus envelope control over rotation speed
  • 7. FLANGE: Flanging with modes for both additive and subtractive flanger. Multiple LFO shapes, including envelope follower
  • 8. TZF: Through Zero Flanger. A flanger effect that crosses through the "zero point" of the sweep where the modulated delayed signal meets back with the dry signal. Modes for both additive and subtractive flanger, plus barber-pole flanger
  • 9. PHASE: Choose from 4, 6, or 8 stage phaser. Multiple LFO shapes including envelope follower
  • 10. PITCH: Modulated pitch shifter. Select your main pitch shift and modulate around it. Extra functionality includes a dry blend and stepped pitch modes
  • 11. FILT: Modulated filter effects like those on classic analog synths. Low Pass, High Pass and Band Pass. Multiple LFO shapes available including a Q-Tron style envelope follower


The Mod 11's Momentary Mode lets you seamlessly switch in and out of effects mode for quick accents. It also features Tap Tempo controllable via the built-in footswitch or an external one. The Mod 11 is modulation with warp drive!

  • 11 modulation types with multiple modes for each
  • Intuitive 'hidden' parameters accessible through its Secondary Knob Mode
  • Tap Tempo via the built-in footswitch or an external one
  • Momentary Mode to switch effects in or out
  • Comes with a standard EHX EHX 9.6DC200mA power supply
  • Compact and rugged
  • Power adapter included
MOD11

Customer reviews

11,000+ Five-Star Reviews On Reverb

What players say after the guitar arrives

“The guitar was well packed and is set up to my liking! I would definitely do business with this company again!”

Gerald K. – Jun 4th, 2026Reverb
Gibson ES-330

“This is a beautiful guitar…appreciate the free setup and quick ship! Would purchase from this seller again…THANKS!”

Guitar D. – Jun 4th, 2026Reverb
Yamaha RSS02T

“Thank you too for a wonderful experience and an amazing guitar. I appreciate the quick shipment and great customer service.”

Eddie R. – Jun 4th, 2026Reverb
Epiphone 1957 SJ-200

“Very fast shipping, arrived in perfect condition, extremely well set up, no adjustments needed at all! Plays and looks great, exactly as advertised.”

Duncan K. – Jun 3rd, 2026Reverb
PRS SE CE 24

“Fast shipping, and great communication from the seller. Pedal arrived quickly and was packaged really well. Would not hesitate to buy again.”

Mark G. – Jun 3rd, 2026Reverb
JHS The Clover Preamp

Very well packed! Would be happy to do business again! Thanks!

Mark B. – Jun 2nd, 2026Reverb
Stevens Steel Lap Steel Bar

“Another masterpiece from Taylor. Great service and communication from Haggerty’s crew. Thanks!!!”

James S. – Jun 2nd, 2026Reverb
Taylor Custom Shop C14ce

“Beautiful guitar, easy txn! Thank you so much! Looking forward to playing this guitar far into the future.”

Josh H. – May 31st, 2026Reverb
Powers Electric A-Type FF42

“Fast shipping, great pedal. Buy with confidence these guys are great to work with!”

Carter M. – May 30th, 2026Reverb
Ibanez TS-9

“Great shop! Awesome price, super fast shipping, and great packaging of an awesome new pedal! Thanks!”

Craig C. – May 30th, 2026Reverb
JHS 3 Series

Frequently Asked Questions

Do you set up every guitar before it ships?

Yes. Every guitar that leaves our store has been professionally inspected, set up, and signed off by the technician who worked on it. You will find a signed checklist inside the box when your order arrives.

How accurate are your condition descriptions?

We treat condition grading as a contractual promise, not an approximation. When we list something as excellent, that reflects a specific, consistent standard we apply across every instrument. We encourage you to call us before purchasing if you want a detailed in-hand description of any specific guitar.

Can I call and speak to someone about a guitar before I buy?

Yes, and we encourage it. Our team are working musicians, not order-takers. Call us at 605-348-6737 and ask about any instrument in our inventory. We will physically pull it off the wall and describe it to you in detail.

What is your return policy?

We offer a 14-day return policy if you change your mind and the item is returned undamaged. You are responsible for return shipping costs.

Do you offer financing?

Yes. Financing options are available at checkout. Monthly payment options are designed to make high-ticket purchases more accessible without requiring full payment upfront.

How do you ship instruments?

Every instrument ships fully insured from our store in Rapid City, South Dakota. We offer free shipping on all website orders over $100. Guitars are packaged to survive transit, properly cased, braced, and protected.

Are you an authorized dealer?

Yes. We are an authorized dealer for Taylor, Martin, Gibson, Fender, and many other brands. We are currently the number one independent Taylor Guitars dealer in the world, an award we have received two years running for 2024 and 2025. We are also a Top 10 premium dealer for Martin, Gibson, and Fender.

Do you sell on Reverb and Amazon as well as your own site?

Yes. We are one of the top 15 resellers globally on Reverb, where we have accumulated over 11,000 five-star reviews. We are also one of the only independent premium dealers in the world authorized to sell Taylor and Martin on Amazon.

How long have you been in business?

Haggerty's Music has been open since 1963. Our store is located at 515 Mount Rushmore Road, Rapid City, South Dakota.

Do you offer instrument repair?

Yes. Our certified technicians handle everything from routine setups to full restorations across fretted, orchestral, and band instruments. Our team holds certifications from Taylor Guitars, Yamaha, and other leading brands. Learn more HERE.

What brands do you carry?

Our core guitar brands include Taylor, Martin, Gibson, Fender, PRS, Epiphone, Suhr, Eastman, Gretsch, Luxxtone, Novo, Jackson, Charvel, Legator, and Yamaha among others. These are also the most searched brands on our site, so each has a dedicated collection page.

Do you offer music lessons?

Yes. We offer music lessons. You can find out more HERE.