SKU: 69293634929
harmonic tremolo pedal

harmonic tremolo pedal Supro Analog Harmonic Tremolo Pedal – Chicago Music Exchange

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Description

harmonic tremolo pedal Supro Analog Harmonic Tremolo Pedal – Chicago Music ExchangeCondition: Item is subject to minor cosmetic imperfections. Packaging may be in poor shape. The item displayed in the images may not be the actual item you receive. The Supro Tremolo's AMPLITUDE HARMONIC switch allows the musician to choose between these distinctly different, vintage effects. AMPLITUDE mode provides the traditional swampy tremolo sounds generated by bias modulating the power tubes in the original Supro amps. HARMONIC mode provides the

Condition: Item is subject to minor cosmetic imperfections. Packaging may be in poor shape. The item displayed in the images may not be the actual item you receive.


The Supro Tremolo's AMPLITUDE / HARMONIC switch allows the musician to choose between these distinctly different, vintage effects. AMPLITUDE mode provides the traditional swampy tremolo sounds generated by bias-modulating the power tubes in the original Supro amps.

HARMONIC mode provides the psychedelic tones of Leo Fender's brownface and blonde amps from the early 60s. Supro implemented Leo's unique harmonic tremolo effect within this pedals transformer-equipped output stage to create an amp-like modulation experience. The Supro Tremolo pedal features preamp and power amp sections, with an actual output transformer deployed to recreate the magnetic saturation and coloration of the original vacuum-tube-based effects found in these historic amps.

Along with the standard modulation controls for speed and depth, the Supro Tremolo also features a gain circuit that allows the musician to overdrive the output stage, right where the modulation effects are created. The GAIN control sets the amount of "preamp" gain in the pedal. As you turn the gain up, the "power amp" circuit will gradually be pushed into overdrive. This control gives you a wide range of sounds from clean to grind, with magnetic saturation occurring as the power section is pushed into overdrive.

As you crank up the gain, the overall output level of the Supro Tremolo is automatically compensated in order to maintain consistent signal level. This allows the musician to use the GAIN control to alter the texture of the modulation effects without an overwhelming increase in audio output level.

Features:

  • Switchable AMPLITUDE or HARMONIC modes Emulates a Class-A tube amp circuit from end to end Achieves magnetic saturation via output transformer Gain control with auto level compensation 
  • Expression pedal control for SPEED 
  • Accepts standard 2.1 mm neg. tip power supply 
  • Runs on 9V battery (included) 
  • Current draw under 30mA 
  • Pedal size: 12 cm x 6.5 cm x 6.5 cm 
  • Original circuit design by Thomas Elliott
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 69293634929

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4.7 ★★★★★
Based on 29 reviews
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Verified Purchase
Jimmy Mitchelll
Cuba, US
★★★★★ 5
Great product!!!
I feel the price is a little high, but the product is amazing! Works just as described!!! I will be purchasing another set for the bottom of my work monitors. Currently their is just 1 set keeping these level.
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Reviewed in the United States on May 3, 2026
R
Verified Purchase
Ryan's Reviews
San Leandro, US
★★★★★ 5
I'd give 10 stars if I could
Holy cow! This is it! For YEARS I've been looking for a product that would align the bezels on my monitors. I found this product by scrolling through reels and then found the link to Amazon. The price was steep and I was hesitant, but I took the gamble and I'm so glad I did. Installation is slightly confusing, and you really want to know how this works before you adhere it to any surface. I'll break it down for you: Align your monitors flat next to each other. Attach one side with the adhesive, then snap the other side on with the magnet. Peel that adhesive strip and lay it on your second monitor so that they are even. Repeat for the bottom. Twist the U shape up for the left, down for the right. Adjust your angle and then lock them by putting the U shape back to how it was. That's it. The stability on these simple magnets is excellent. I went from a wobbly mount to locked in and only moving when I want it to. I'm so happy this product exists. That's German engineering for you. 💪💪
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Reviewed in the United States on May 17, 2026
R
Verified Purchase
Richard G.
Omaha, US
★★★★★ 4
Works well...but the price!
I ordered two sets to connect 3 monitors together for a workstation at my job. These are well designed and the magnets are pretty strong. Installation is easy and it holds the alignment well. The only issue is the price. For what it is, the price is quite high. The value proposition would be much higher for those who need to be able to not have them aligned from time to time, such as rotating one around for others to see in an office. But if don't need to do this and just want alignment, there are much cheaper options. If you want to go the cheapest DIY route and it won't be seen, some popsicle sticks with two sided tape works well. You can crack them in the middle to act as a hinge.
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Reviewed in the United States on February 5, 2026
K
Verified Purchase
Kayla m
Omaha, US
★★★★★ 5
Awesome product only thing that worked
I originally thought the Screen Buddy was overpriced, but after spending hundreds of dollars trying to perfectly align my monitors for sim racing, this is genuinely the only thing that has actually worked properly. Triple monitor alignment is one of the most frustrating parts of building a sim rig, especially with monitor arms constantly moving or sagging. This finally made everything line up the way I wanted. Expensive? Maybe. Worth it after all the headaches? Absolutely. Great job.
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Reviewed in the United States on May 9, 2026
M
Verified Purchase
medic4life
Fort Morgan, US
★★★★★ 1
Doesn't stick
The adhesive tape kept coming off. I cleaned and followed the installation instructions, but it still kept coming off. Wouldn't recommend.
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Reviewed in the United States on April 23, 2026

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