Feedback Looper + Phase Inverter + Boost

What exactly does a Feedback Looper do? Simply put, it creates feedback and the sound is ingurgitated in a vortex of noise. Plug in your delay pedal, a phaser or a fuzz and let the sound noisy awesomeness consume you.

A Feedback Looper is cool, but we made it even better. We added an expression pedal input so you can control the amount of feedback with your feet. But we also added a phase inverter (that also acts as a booster) to inverts the signal phase so you can use this pedal with pedals that have a reverse phase (e.g. some DBA fuzzes have reverse bias transistors layout so they won't produce any feedback with a regular feedback looper).



Use this control to the amount of feedback (can be kind of dangerous for your ears).

Expression Pedal Input
On the left side, we added a jack to allow you to use an expression pedal so you can control the amount of feedback with your feet.

Phase Inverter
Use this side switch to invert the signal phase. Plug in your pedal in the send/return loop. If you don't hear sound when the Feedback knob is all the way right, it means you have to invert the phase: toggle the little switch. There is no "normal" phase, just try with different pedals and you'll notice every pedal act differently.

Send/Return Jacks
Use this jacks to connect the pedal you want to produce feedback from (eg. delay pedals, tremolos..)


Frana Pedals

All our pedals feature true bypass high-quality foot-switches, Neutrik 1/4″ Jacks, Switchcraft DC jacks, made in USA resistors with 1% tolerance, high-quality Wima and Panasonic capacitors, Fairchild and Central transistors.
The pedal can be battery powered. You may use an external AC Adapter power supply instead of the battery. Connect the AC Adapter’s plug to the 9V Power Jack or plug a standard 9V battery by removing the screws on the back plate of the pedal. The power jack’s polarity is center negative. Do not run at higher voltages or you will risk burning the components!



  • Designed and Assembled in the U.S.A.
  • Measures 4.625″ x 2.5″ x 2.25″ with knobs
  • True Bypass Switches
  • Electroless Nickel Immersion Gold PCB Finish
  • RoHS Compliant
  • 9V Battery and 2.1mm DC input for AC adapters

Product Specs

Brand New (New)
Frana FX
Nausea Feedback Looper
Noise Generators, Buffer
Made In
United States


About The Seller

Frana FX
Joined Mar 2016
New York, NY, United States

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Location Tax Rate
New York, US 8.875%
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Return Window

This product can be returned within 14 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.


Buyer receives a full refund in their original payment method less any shipping costs.

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Frana FX

New York, NY, United States
Joined: Mar 2016