Donner Modulation Pedal - Mod Square Ⅱ for Electric Guitar Pedal Boards, 16 Effects Chorus Phaser Tremolo Flanger Rotary Vibrato Wah Lo-fi Detune 16 Modulation Modes, True Bypass
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Availability:
In Stock.
Arrives
Wednesday, Mar 11
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Color: Green Mod
Features
- #Versatile Effects#: With 16 different effects to choose from, Mod Square II provides a wide range of tonal possibilities, including flanger, tremolo, phaser, and chorus effects; You can easily find the perfect sound to match any playing style or musical genre
- #Easy to Use#: Mod Square II features intuitive controls that allow you to adjust the rate, level, and depth of your effects; You don't need to be an experienced guitarist to use this pedal. It's perfect for beginners and professionals alike
- #High-Quality Sound#: Thanks to the digital circuitry, Mod Square II delivers a high-quality sound that's free from unwanted noise and interference; You can achieve a rich and natural sound with ease
- #Buffer Bypass#: The buffer bypass design ensures that your signal remains clear and strong, even when the pedal is not engaged; You won't lose any tone or volume, so you can focus on your playing
- #Tap Tempo#: Mod Square II also features a tap tempo function, which allows you to set the speed of your effects by tapping the footswitch; This feature is perfect for creating rhythmic patterns or syncing your effects with the tempo of the song
- #Kind Reminder#: Requires a DC 9V current adapter power supply (not included) for operation
Brand: Donner
Style: Compact
Color: Green Mod
Product Dimensions: 3.7"L x 1.7"W x 2"H
Item Weight: 0.25 Kilograms
Item Weight: 8.8 ounces
Product Dimensions: 3.7 x 1.7 x 2 inches
Item model number: EC6644
Date First Available: July 23, 2021
Body Material: Plastic
Color Name: Green Mod
Connector Type: DC power jack
Hardware Interface: HP-HSC
Signal Format: Digital
Material Type: Digital Circuitry
Power Source: Corded Electric
Voltage: 9 Volts
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Mar 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Red Distortion
For the cost I cannot find anything to complain about with this pedal. The Donner Distortion pedal allows me to produce a wide range of distortions, from a relatively mild, overdrive tone, to hair metal. Adjusting the tone and volume using the knobs is simple, and the noise level is not overwhelming, and disappears completely when using a noise gate. I've been practicing and gigging with this pedal and it has held up great so far. It is powered by a standard, 12v power supply (not included) If you're looking for a compact, inexpensive, distortion pedal for your board, I highly recommend this one, it does a nice job at a great price.
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Reviewed in the United States on December 6, 2025 by Bill L.
Color: Red Octave
So I ended up with 2 Harmonic Square Pedals. Wanting to gift one to a friend, I plugged them both in at the same time, you know... keep the 'good one' hehe. WOW!!!!!! I cannot describe how nice they sound together -running one into another. Used separately they work very well and do what they should (including a killer chorus in the 'detune' setting) but together they sound so rich, deep, full, shimmery and expensive. With both of these on at the same time there is near endless settings just flipping the switch and turning the pitch knob. Easily sounds like a $450 effect. Run these into a tad of reverb/delay and it's absolutely amazing ambient heaven. It could be one of the coolest pedal combo's for shimmer/pitch/chorus/octaving/doubling... SO GLAD I ACCIDENTLY TRIED THIS. So in short, I'm buying my buddy a new one.
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Reviewed in the United States on November 26, 2025 by Amazon Customer
Color: White Looper
I really enjoyed using the looper pedal by Donner. Once again this brand delivers an excellent product at an extremely low price point! The controls are very easy to use, though I did notice a slight difference in sound quality when being played back through my amp, not too bad though. I removed a star because I noticed another persons pre recordings were saved to the device but that’s hardly a complaint. I would definitely buy again!
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Reviewed in the United States on December 2, 2025 by Michael L.
Color: Yellow Delay
For about half the money of an MXL analog delay it is about 60% as good. It isn't as smooth as the MXL and it doesn't have the same range of timing choices. But for 85% of what I needed, it works fine. Donner pedals are well made and don't break when you step on them.
Reviewed in the United States on January 20, 2026 by Andrew
Color: Yellow Delay
delivers warm, smooth analog-style delay in a small, affordable pedal. The repeats sound natural, the controls are easy to use, and it stays quiet without coloring your tone. Solid build, great sound, and perfect for slapback, leads, and classic rock. Excellent value and highly recommended
Reviewed in the United States on February 3, 2026 by Gene v
Color: White Looper
This is the first Amazon review I am writing, and I am only doing so because the quality control of the product is so bad as was the customer service. I am a fan of Donner. I have other products by them, including pedals of this same line. But this 30 minute looper just doesn’t cut it, and considering I have bought 6 (yes… actually 6) of them it’s unacceptable. And before anyone suggests that it’s because of my power supply: I have two different Donner power supply units, each working perfectly fine with the rest of my pedals and effect boards — I also have independent power units, and none of them fix the issue. The issue is this: For one, a general white-noise ambient hiss is present. This I honestly don’t have much of a problem with. The main thing is that when it’s recording every five or so seconds a strange and harsh digital chirping/beeping sound occurs. This sound is recorded into the loop itself. Naturally, as you make various dubs, the chirping noise is compounded and compounded and the whole arrangement is quite annoyingly taken up with this recurring beeping. I originally bought 3 back in December. My mailman stuffed those one into the mailbox on a particularly rainy week and decided not to close the mailbox for whatever reason. Given, it was wrapped in plastic and all. Anyways, these pedals didn’t work. I attributed this to water condensation or something. I returned them no problem and I bought three more. Same problem. At first it was 2/3 of the second batch that didn’t work, but then they all started doing the same thing. This isn’t a problem with a particular amp. This same thing happens on my guitar amp as it does on my bass cabinet as it does through my mixer and out my PA’s. It’s not a problem of my cables. I have dozens of different quarter inches, some I got even brand new alongside this purchase, and same issue. I reached out to their support team and explained the issue and the lengths I went through to troubleshoot it myself. They asked for video proof — which is fine, though they said it needed to be less than 20mb. This is what they said exactly: “Dear Customer, Thank you for responding to our email. We hope this email finds you well. We are humbly asking for your cooperation to send us videos so that our technical team can localize what the problem. Rest assure once our team know what the main problem is we will provide suitable solution to solve your problem. Please operate it and send us a video showing the operation and explaining the problem. (Note: The video should be less than 20MB in size.). Once we receive the needed information, we'll handle this matter with the utmost care and attention to detail. Looking forward to your reply.“ I said, “I filmed a video showcasing and explaining the issues, but I have no idea how it’s going to be able to only be 20mb in size.” (My 3 minute video to them shot on my iPhone amounted to 328mb) I then went on to say I can send them a google drive link, which I did. Their next email was them mechanically repeating their former email to me, saying once more after I already sent them the google drive link. This is it: “Dear customer, Thank you for reaching out to us regarding the issue you are experiencing. We sincerely apologize for the inconvenience you have experienced with our product. Could you show us the problem via video? Could you upload the video (less than 15 MB) as an attachment. Rest assure we will do our best to solve your problem” This could just be a minor mishap, bur they switched from it needing to be under 20mb to them needing it to be under 15mb — which leads me to believe it’s really not some hardline technical consideration as to why they need the video to be such a size, and they could very well just click on my public google drive link to the video as they clearly have internet access. All around upset with this product and their service. Going to go through with my second return on this same product and shop around for different loopers — I was just very excited at the prospect of having 30 minutes of loop material, as I compose very experimental and trance-like songs, and so this was in theory absolutely perfect for my purposes, especially considering the price point.
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Reviewed in the United States on February 9, 2025 by E.T.
Color: Yellow Delay
Works well. Sounds great. Easy to use. Seems sturdy.
Reviewed in the United States on January 31, 2026 by JK
Color: Yellow Delay
It sounds good overall and does not introduce any noise into my signal chain. The input, output, and overall build quality are solid. My main issue is the echo control. If you are looking for a subtle slapback effect, this pedal is very hard to dial in. Turning the echo knob all the way down removes the delay completely, but the moment you turn it even slightly clockwise, the slapback becomes very loud. Using a clock analogy, 9 o’clock is off, 9:05 is subtle, and by 10 o’clock the delay is already overwhelming. From about 10 to 3 o’clock, there is very little noticeable change. It is possible I received a bad unit, but based on this experience, I will not be purchasing Donner pedals going forward. I would rather spend a little more for a more reliable brand.
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Reviewed in the United States on January 31, 2026 by jeff