Butterfly (Harmonic Tremolo)



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Harmonic Tremolo + Tonal Amusement Park

This Butterfly has endless patterns for all you tone freaks and tweakaholics..

While most tremolos modulate the signal by rhythmically lowering and raising the volume, the Red Noise Butterfly utilizes a Low Pass Filter to achieve a warm and articulated tremolo sound, providing pliable tonality and flexibility.

Here are a few of its special features:

  • Manual Mode turns off the LFO and allows manual control of the low pass filter’s cutoff frequency.
  • Dry/Wet Signal Mixer allowing for parallel processing
  • Two EQ controls: Bass / Treble tilt + Mid Boost/Cut (only on the ‘Wet’ signal)
  • Tap tempo Foot switch 





Controls the overall output volume from the pedal.

Dry / Wet

The Butterfly splits in input signal in such a way that a “dry” signal can be mixed with the “wet” processed one. 

All functions, knobs and switches on the pedal apply only to the “wet” signal except for the Vol Knob which controls the mixed output. 

The “dry” signal is buffered. 

B / T 

The Bass and Treble knob accentuates lows while reducing highs and vice versa around a center frequency of 800Hz. When the knob is centered the response is flat.


Mid Boost/Cut at center freq of  800Hz. 

When the knob is centered the response is flat. 

This control was designed to compensate and emphasize when lacking mids so it can amplify a lot… If you get distortion just take it down a notch.


Determines the range in which the filter is functioning. Clockwise = higher in the frequency range. Counter clockwise = lower in the frequency range. 

Soft / Hard 

Sets two mods of operation with different Q and depth:

Soft - More subtle and shallow

Hard - More pronounced and choppy

LFO / Man.

Determines the modulation source: 

LFO – The Butterfly modulates automatically and moves according with the chosen wave shape and speed. In 

Manual – The Butterfly can be used as a low pass filter. Control the cutoff frequency using the Speed / Freq. knob. 

*Please note that the range of the filter still depends on the position of the ‘Range’ and ‘Soft / Hard’ functions so be sure to set those controls to fit your filtering desires. 

Sync Input 

This is an external sync input connected to the Tap Tempo button. This allows the LFO to be synchronized to an external clock signal. The circuit provides protection against negative voltages and signals up to 18V or so

ON Footswitch 

Turns the effect on and off. When in the ‘Off’ position the Butterfly is true bypass

Tap Footswitch 

Tap while the pedal is on or off to set the desired speed.

Power 9V negative center

The Butterfly loves you, love it too, feed it clean 9V negative center and it will gladly and delightfully flap its shiny wings for all to see.  



Getting started: 

Turn the Blend knob all the way clockwise (maximum tremolo)

Switch the Soft / Hard toggle on “Hard“

Switch the LFO / Man. Toggle to “LFO”

Range, mid and T/B knobs at the center.

Set a comfy Volume.

Using the Speed / Freq. knob or Tap Footswitch, set a desired speed.


Play with the Range knob and get a feel of the filter range.

Play with the wave shapes to get acquainted with the different accents they provide


Return Policy:

All Red Noise Pedals come with a 14 day money back guarantee as long as pedals are returned in their original new condition and are in perfect working order.

Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. 

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. 

 Non-returnable items: 
- Gift cards 
- Downloadable software products 
- Some health and personal care items 

To complete your return, we require a receipt or proof of purchase. 
Please do not send your purchase back to the manufacturer. 

There are certain situations where only partial refunds are granted (if applicable) 
- Book with obvious signs of use 
- CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened 
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error 
- Any item that is returned more than 30 days after delivery 

Refunds (if applicable) 
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. 
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. 

Late or missing refunds (if applicable) 
If you haven’t received a refund yet, first check your bank account again. 
Then contact your credit card company, it may take some time before your refund is officially posted. 
Next contact your bank. There is often some processing time before a refund is posted. 
If you’ve done all of this and you still have not received your refund yet, please contact us at natvig101@gmail.com. 

Sale items (if applicable) 
Only regular priced items may be refunded, unfortunately sale items cannot be refunded. 

Exchanges (if applicable) 
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at Support@fuzzaudio.com and send your item to: 7901 E Belleview Ave, Apt. 359, Englewood CO 80111, United States. 

To return your product, you should mail your product to: 7901 E Belleview Ave, Apt. 359, Englewood CO 80111, United States 

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. 

Depending on where you live, the time it may take for your exchanged product to reach you, may vary. 

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

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