SKU: 38129696470
feedback generator pedal

feedback generator pedal *On Sale* Harp Rod PI Effects Harmonica Pedal. Feedback P.I. Pedal. Includes Free USA Shipping

Sale price$23.83 Regular price$26.48
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Ships within 48 hours · Estimated delivery Nov 12 - Nov 17

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Description

feedback generator pedal *On Sale* Harp Rod PI Effects Harmonica Pedal. Feedback P.I. Pedal. Includes Free USA ShippingFeedback is an elusive criminal. Thats why you need a detective! The Feedback P. I is a device that will help you eliminate the threat of feedback on any stage. It combines the three main approaches for fighting feedback all in one box: An active notch filter, a noise gate, and a Vol knob that can act as a PAD. The active notch filter will take care of the fundamental frequencies that are causing feedback. The Noise Gate acts as a life insurance,

Feedback is an elusive criminal. That’s why you need a detective!

The Feedback P.I is a device that will help you eliminate the threat of feedback on any stage. It combines the three main approaches for fighting feedback all in one box: An active notch filter, a noise gate, and a Vol knob that can act as a PAD. The active notch filter will take care of the fundamental frequencies that are causing feedback. The Noise Gate acts as a life insurance, cutting the signal while you are not playing. The Vol knob goes just a couple of decibels above unity, so it can be used as a PAD if you are forced to use a higher gain amp.

How to use:

Right is IN

Left is OUT

1.- Set the VOL knob at unity (just a few degrees lower than fully clockwise).
2.- Start with the FREQ knob all the way to the right.
3.- Turn your amp and pedals past the feedback threshold. The idea is to intentionally create feedback.
4.- Once the feedback appears, start turning the FREQ knob to the left until the feedback goes away. You’ll likely find a few spots (or a range) where feedback disappears, but try to find the optimal position at the higher end of the frequency range.
5.- (Optional) Set the Noise Gate to 12 o’clock and engage the switch (up position). If your band is loud, you might need to turn the knob further to the right.
Volume: Set the Vol at unity if you are using a feedback-friendly amp. If you are using a high-gain amp, move the Feedback P.I to the end of your chain and set the Vol knob to 12 o’clock. This will turn the pedal into a PAD that will help to reduce the gain of the amp.

FREQ: This knob sets the frequency affected by the notch filter. It ranges from 400hz to 7000hz. The goal is to find the highest offending frequency. This will better preserve your tone.

ON: Turns the noise gate on or off. When off, the noise gate is bypassed.

GATE: Sets the threshold of the Noise Gate.

Right is IN

Left is OUT

The power consumption of the Feedback P.I. is around 20mA. It doesn't need much power to run, so any 9V DC (center negative) Power Supply should be enough to power this pedals and a handful of others. 

 

Feedback Pedal

User Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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: 38129696470

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Doug
Natrona Heights, US
★★★★★ 5
Looks good and easy to assemble
Color: Black, Size: 7.9"D x 21.7"W x 23.6"H, Color: Black, Size: 7.9"D x 21.7"W x 23.6"H
The parts fit and there were even a few extras. Nice looking, sturdy small cabinet with clear instructions.
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Reviewed in the United States on April 13, 2026
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Pam Wilson
Lake Worth, US
★★★★★ 5
Nice cabinet
Color: Brown, Size: 7.9"D x 21.7"W x 23.6"H
This cabinet was pretty straight-forward with instructions, looks nice and was packed well.
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Reviewed in the United States on May 31, 2026
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Robert
Birmingham, US
★★★★★ 4
Would recommend purchasing
Color: White, Size: 11.8"D x 21.7"W x 23.6"H
Fairly simple to assemble and looks good. Would be nice to have a design that incorporates a French cleat to simplify mounting the cabinet on the wall. Aside from that, decent quality for the price point.
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Reviewed in the United States on February 18, 2026
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amy gardiner
Dallas, US
★★★★★ 5
Homleke bathroom wall cabinet
Color: Black, Size: 7.9"D x 21.7"W x 23.6"H
This is an awesome little cabinet! The cabinet was easy to put together, the instructions were very clear. It went together in about a half and hour! It is sturdy and has a lot of room. We put it in the bathroom but I'm in the process of thinking where I can put another one because it is so nice!
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Reviewed in the United States on February 27, 2026
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Sara Smith
Louisville, US
★★★★★ 5
Easy assembly
Color: White, Size: 7.9"D x 21.7"W x 23.6"H
Love the design! Very easy to assemble. Came exactly as described
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Reviewed in the United States on May 19, 2026

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