Does my StroboStomp LE require calibration?

Generally, your StroboStomp LE will not require calibration and should remain perfectly accurate if it has not been damaged.

Unlike more modern Peterson strobes, legacy models such as the Peterson 400, 420, 450 and 700 do require occasional calibration.

If you require service, please open a support ticket and return the tuner for repair.

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What power supplies can be used with my Peterson Pedal Tuner? ( StroboStomp 1 & 2, Stomp Classic & StroboStomp HD/LE/Mini )

9VDC - Regulated - Center negative - At least 85mA

Partial list of regulated power supplies:

  • Voodoo Lab Pedal Power 2 (Eight isolated 9VDC 100mA regulated outputs)
  • Dunlop DCB-10 DC Brick (10 outputs)
  • Visual Sound 1-Spot (9V fully regulated output)
  • Carl Martin Big John 9v Power Supply (Seven 9VDC outputs 600mA total)
  • Sanyo Pedal Juice
  • T-Rex Fuel Tank
  • Godlyke PA9 Power All (9V 800mA regulated output)
  • Boss PSA120 adapter (9V 200mA regulated)
DO NOT use the Boss ACA120 Unregulated power supply! Boss ACA, Danelectro DA1, RadioShack, etc., do not have a voltage regulator and are not suitable.

As always with any pedal, be careful - check voltage ( 9V regulated ) & polarity (positive barrel-negative inner sleeve) first and don't overload the power supply's ampere rating by daisy chaining too many pedals from a single supply.

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How do I read a strobe display?

Basically, the strobe image appears to travel to the left if your instrument is flat of the desired pitch and to the right if it is sharp. On earlier models such as the StroboStomp 1, StroboStomp 2, VS-1, VS-II and V-SAM, the strobe image travels upward if your instrument is sharp and downward if your instrument is flat of the desired pitch.

Adjust your instrument until the pattern is as close to still as possible. Strobe displays are 'real-time' and extremely precise. They require very fine tuning adjustments to stop the display because the frequency/pitch of any instrument is never totally stable.

You'll quickly learn to read the display, make the most precise adjustments and appreciate the high resolution that only a Peterson provides.

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Is the accuracy the same for all Peterson tuners?

Yes, the accuracy is within 0.1 cents (1/1000 of one semitone) as with all Peterson Strobe Tuners. An important thing to note is that Peterson Strobe Tuners have ultra high definition displays, so not only are they highly accurate in detecting a note but they have the ability to display that accuracy. Other products claim accuracy but do not have the high definition screen to display the level of accuracy in which they claim. If you cannot see the accuracy, it is of little value. Only Peterson provides High Definition Strobe Tuning.

How Accurate Is My Tuner?

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What is my StroboStomp LE’s Sweetened Tunings feature all about?

A Sweetener is a set of cent offsets or a deviation from generic Equal Temperament interval spacing traditionally used in tuning. Tuners made by Peterson, including the StroboStomp LE, contain many choices of Sweeteners, in other words, several presets with differing interval spacing relevant to the instrument being tuned. If you’ve never been happy with how your instrument tunes up with your present tuner, a Sweetener could be just the thing to change that without any modifications whatsoever. The StroboStomp LE offers Over 135 unique and very accurate tweaks which often make all the difference.

Peterson Tuners - Sweetened Tunings

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What is a Guided Tuning?

Guided Tuning is a new feature in tuners, it allows the user to tune to specified tunings, be they dropped, open, alternative etc. without having to know the correct note names. The tuner replaces the note name with a string number which the user simply uses as a guide while adjusting the pitch of the string so that the string number displayed on the tuner matches the string number being plucked.

The result is an accurately tuned guitar tuned to the required alternative tuning.

Using Peterson Guided Tuning, it is not only possible to try out new tunings without any other reference whatsoever, it is also entirely possible for someone with no previous musical experience at all to consistently, accurately and easily tune a 5, 6, 7, 8 or 9-string guitar to any tuning.

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Which Peterson products work with Peterson Connect?

Currently, the following products are compatible with Peterson Connect:

  • StroboClip HDC
  • StroboStomp Mini
  • StroboPLUS HDC
  • StroboClip HD
  • StroboStomp HD
  • StroboStomp LE
  • StroboPLUS HD
  • Stomp Classic Pedal Tuner / Active DI

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How accurate is my StroboStomp LE?

Your StroboStomp LE is accurate to 0.1 cent (1/1000th of a semitone). It’s important to note, that unlike other tuners which list the detection accuracy as the main specification, the StroboStomp LE detection AND display accuracy is 0.1 cent due to its high definition display.

How Accurate Is My Tuner?

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I often tune my acoustic instrument in a loud environment. What's available to help with that?

When tuning an acoustic instrument in an environment where you cannot control the background noise, like at a gig or loud band hall, a vibration pickup is a very nice alternative to using the built-in microphone.

A Peterson TP-3 clip-on tuning pickup is a very versatile device with a 1/4" connector that can be clipped onto any portion of the instrument that vibrates, such as the headstock of a guitar or the bell or lead pipe of a horn.

A Peterson Pitch Grabber Mobile Tuning Clip utilizes a 1/8" connector for use in mobile phones or tablets with software tuners.

For instruments with a flat resonating surface, you can use a suction cup tuning pickup to reduce ambient noise interference.

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How do I send my product in for repair?

If you need to send your product in for repair, please open a support ticket.

If you have not registered your tuner, you must do so before opening your support ticket.

All products returned for service must have a support ticket number on the outside of the box as well as on the accompanying paperwork on the inside of the box.

We strongly recommend shipping with tracking information and insurance.
Peterson Electro-Musical Products, Inc., and subsidiaries thereof, are not responsible for lost packages in transit to our repair facility.

Include a description of your problem in both your support ticket and paperwork included with your product. Please be specific about the type of malfunction as well as the conditions under which it occurs. Include your name, address, phone number, and email address on the accompanying paperwork.

There is a minimum charge of $95.00 US plus return shipping charges for all Mechanical Peterson tuners received and a minimum charge of $48.00 US plus return shipping charges for all LCD Peterson tuners (unless subject to Peterson warranty). If you would like an advance estimate for service, you must include a request in writing with the product you ship. If you choose not to have your product repaired, there is a $48 diagnostic charge plus return shipping.

Payment options include PayPal, VISA, MasterCard, AMEX and Discover Card.

Any balance is due within 30 days of the completion of the repair. After 30 days, a storage fee will be charged. After 90 days, your property will be considered abandoned and will disposed of at our discretion.

For international (non-USA) repairs and for all Conn and Node tuner repairs, please open a support ticket as different procedures may apply.


Contact and Shipping Details:

For service of Peterson tuners:

Peterson Electro-Musical Products, Inc.
11601 South Mayfield Ave. Alsip, IL 60803 USA
TEL: 708-388-3311 (ext. 143) FAX: 708-388-3341
Email: techwest@petersonemp.com

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I want to power my tuner via USB. What power supplies are available with USB power output?

Many pedalboard power supplies are now including 5v USB power output. Below is a partial list of power supplies with 5v USB output.

  • CIOKS DC7
  • CIOKS 8
  • Fender Engine Room LVL8
  • Fender Engine Room LVL12
  • Rockboard ISO Power Block V16
  • Mission Engineering 529 USB Pedal Power Supply
  • Mission Engineering 529i Recharge
  • Gator GTR-PWR-12
  • Joyo JP-05 Power Supply 5
  • Onstage PS1000
  • Lotkey Power Supply Portable 7
  • Pedal Tank Pocket DC

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What is the frequency response range of the StroboStomp LE?

The frequency response range of the StroboStomp LE is 16.35Hz to 7302Hz.

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Which browsers support Peterson Connect?

Google Chrome, Chromium, Microsoft Edge, Opera, Vivald and Comodo Dragon all support Peterson Connect which is built on webHID, a feature more and more browsers are adopting. As other browsers incorporate the webHID feature, Peterson Connect will immediately work in that browser. Those who prefer a different browser can design sweeteners and presets in any browser. Only the data transfer to your device relies on Peterson Connect.

Peterson Connect will not function in Safari. Custom Configuration, Sweetener Design, and Tempo Map designer will function in Safari, but Safari does not support webHID therefore data transfer to your device is not possible.

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What is Quick Configuration and how do I use it?

Quick Configuration is a simplified version of our Custom Configuration tool which allows you to add or remove Sweetener categories from your device, assign a color to all Sweeteners within a category, and reorder Sweetener categories on your device.

To access the Quick Configuration tool you must first register your product and pair it with Peterson Connect via a USB cable.

The Quick Configuration tool may be found in three places. Look for the stopwatch icon to identify the Quick Configuration tool:

  1. The post registration screen
  2. The Custom Configuration Screen
  3. The device connection dropdown menu

Peterson Connect | Quick Configuration

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What is the note range of the StroboStomp LE?

The note range of the StroboStomp LE is: C0 - A#8

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What are the buffer specifications for the StroboStomp LE?

The StroboStomp LE buffer specifications are listed below:

Input impedance:

  • Mute: 5M ohm
  • Unmute: 5M ohm


  • Output Impedance:

  • Mute: 1K Ohm
  • Unmute: 100 Ohm


  • THD: 0.04% or less at nominal input level


    SNR: (at +4dbv, +14 above nominal level)

  • 106 dB or greater, un-weighted
  • 108 dB, A weighted
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    I do not see the Tune Screen when I power my StroboStomp LE via USB. How do I fix that?

    When powering your StroboStomp LE via USB there must first be an instrument cable inserted in the input jack. If a cable is inserted in the input, your StroboStomp LE will show the Tune Screen immediately when powered on.

    Powering via USB without a cable in the input jack will result in Update Mode being displayed.

    If you wish to access the Tune Screen without a cable in the input jack while powered via USB, press the Stomp Switch, or the Menu Up and Plus Value Button simultaneously, to exit Update Mode and enter the Tune Screen.

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    What are the dimensions of the StroboStomp LE?

    The dimensions of the StroboStomp LE are: 129mm x 66mm x 54mm ( with switch )

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    I received a replacement lens cover for my StroboStomp LE. How do I install it?

    Please follow the instructions below for your particular product:


    StroboStomp HD/LE:
    StroboStomp HD Plastic LCD Cover Replacement


    StroboStomp Mini
    StroboStomp Mini Plastic LCD Cover Replacement

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    What should I do if my new Peterson product doesn't seem to work properly?

    If you've first tried all of the solutions offered here, please contact Peterson directly. It is important that you do NOT return the product to the store in which you purchased it without Peterson instructing you to do so. If your unit is problematic, we would like to limit the chances of another customer purchasing the returned unit. Always arrange for product service or replacement directly with Peterson.

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    Windows 10/11 presents "USB device can't be recognized" error when I plug in my tuner.

    If Windows 10 or 11 presents the error "USB device can't be recognized" when your tuner is plugged in, this is usually caused by a corrupt automatic driver installation.

    A restart of your computer will usually solve this issue.

  • Click Windows/Start button
  • Select Power
  • Select Shut Down
  • After your computer powers off, restart your computer, plug in your tuner, and the USB drivers should install automatically.

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    What is the range of Hz calibration or Concert A calibration of my StroboStomp LE?

    The Hz calibration range of your StroboStomp LE is 390Hz to 490Hz. The default setting is Concert A 440Hz.

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    I've registered my product warranty but it's not showing up in the list of products that I can configure.

    In order to configure your device, the Peterson website needs to have previously paired your device with your warranty via Peterson Connect when your device is connected via USB. If you've registered your product but have not yet connected, you'll need to do that before you are able to configure your product. When the website detects your device it will prompt you to pair with your product's serial number. If the website detects your device while registering your warranty, it is automatically paired.

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    StroboStomp LE Version 1.0.33

    Wednesday, July 20, 2022 9:05:00 PM EDT

    • Official Production Release
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