best overdrive pedal for harmonica *On Sale* Harp Rod PI Effects Harmonica Pedal. Feedback P.I. Pedal.  Includes Free USA Shipping
SKU: 4573990262
best overdrive pedal for harmonica

best overdrive pedal for harmonica *On Sale* Harp Rod PI Effects Harmonica Pedal. Feedback P.I. Pedal. Includes Free USA Shipping

Sale price$25.30 Regular price$28.11
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Description

best overdrive pedal for harmonica *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: 4573990262

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NC Native
Omaha, US
★★★★★ 1
Poor quality, easily rips at seams.
Size: Medium, Color: Organic Cotton 5 Black Pack
Fit is great but these things do not hold up. I have some Gap hipsters that are older and they are much higher quality. These rip and tear way too easily.
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Reviewed in the United States on December 15, 2025
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Alanna Humphrey
Lake Worth, US
★★★★★ 4
Runs small. Get a size up.
Size: Large, Color: Organic Cotton 5 Pack-bwg
Runs a bit small. Kind of tight. Size up.
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Reviewed in the United States on February 26, 2026
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Amelia Bradley
Draper, US
★★★★★ 3
Elastic band is not great
Size: X-Large, Color: Organic Cotton 5 Black Pack
The cotton material is comfortable and seems like it will last some time because it isn't thin like most. However, I could really use a thicker, more durable elastic band.
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Reviewed in the United States on November 29, 2025
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doctur44
West Palm Beach, US
★★★★★ 5
Comfortable
Size: Large, Color: Organic Cotton 5 Black Pack
Comfortable and decent looking black underwear in a hipster, boy cut style. Material is soft and lightweight, kind of thin, but since they’re black they’re not see through at all. The elastic band at waist is also thin and not too tight so it’s very comfortable and doesn’t dig in at all. Five identical pairs in the order makes this a decent value, especially at this price and for Organic cotton material. The large size was perfect for me I sized up based on the recommendations). I’m pretty happy with this order.
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Reviewed in the United States on October 17, 2024
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R. Staley
Omaha, US
★★★★★ 5
Comfortable, great coverage, perfect fit!
Size: Medium, Color: Organic Cotton 5 Black Pack
These boy shorts are the perfect cut and extremely comfortable! They were true to size, great coverage and they fit me great. They stay in place and don't ride up in my pants so that was a huge plus too. Really glad these came in a pack of multiples cause I would definitely want more. I actually might order more anyways cause I like them so much, haha! Definitely recommend these, they are a great price for comfortable, nice quality underwear.
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Reviewed in the United States on October 4, 2024

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