SKU: 5027469047
harmonica pedals

harmonica pedals *On Sale* Harp Rod PI Effects Harmonica Pedal. Feedback P.I. Pedal. Includes Free USA Shipping

Sale price$24.81 Regular price$27.57
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Description

harmonica pedals *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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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 5027469047

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Roy Cox
Lexington, US
★★★★★ 5
Amazingly strong and versatile
Size: 2.5" & 4" - 4 Pack, Style: Open Hooks
I saw these advertised on Instagram and immediately purchased a 4 pack. I really wanted them to work but after trying them on 4-5 different steel surfaces I couldn't'[t get any of them to stick well or hold anything heavier than a wet towel. Maybe a bad batch? A shame. The company took the time to reach out to me after seeing my first review where the hooks wound stick to metal poles in my studio. I definitely was not expecting them to reach out to address my issues with the hooks I purchased and returned. After trying the new replacement hooks out I now could not be more impressed! They are strong, well made and easy to use. The hooks and the magnetic baskets are phenomenal and I highly recommend them. I did a test with the hooks, which held a 75 lb weight with no issues on the side of a craftsman tool box! It seems that any early product issues are fixed. The customer service is fantastic and they really took the time to address the issues and keep their customers coming back happy. Well done! Gator Magnetics is definitely a class act in my book!
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Reviewed in the United States on April 15, 2024
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darren
Massapequa, US
★★★★★ 5
Easy to use!
These work great for a metal workshop! Holds up my 6ft ladder and pressure washer hose with ease. Definitely recommend
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Reviewed in the United States on April 20, 2026
M
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Mark Archer
Grantham, US
★★★★★ 4
25 lb hanger doesn’t hold my Echo trimmer
Size: 4" - Red, Style: Open Hooks, Size: 4" - Red, Style: Open Hooks
Purchased the holders for my Echo trimmer and hedger but the tines are not long enough to hold the Echos. A picture in the description shows a gas powered unit hanging which is why I bought the hangers. Buy the larger 45 lb hanger for trimmers. Nice hook but I’ll probably send them back if i can’t find a use for them soon.
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Reviewed in the United States on November 30, 2025
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Amazon Customer
Belleville, US
★★★★★ 5
Handy
Size: 4" - Black, Style: Open Hooks
I use an ocean container for storage and have some things that need to be hanging. These are perfect for any place you are unable to drive nails. I bought the stronger ones and have had no problems. Ordered more after trying them.
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Reviewed in the United States on May 21, 2026
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Janie Bryson
Massapequa, US
★★★★★ 5
Great gift for men who have everything for garage
Bought these as a gift for a man who has everything but these hooks. He loved them. size was perfect for garage and the magnetic strength was great.
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Reviewed in the United States on May 18, 2026

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