Knowledge Base
Frequently Asked Questions
Does my Stomp Classic require calibration?
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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Is the Stomp Classic discontinued?
Our currently available tuners are the StroboStomp HD, StroboStomp LE, StroboStomp Mini, StroboPLUS HDC, AutoStrobe Model 490, AutoStrobe Model 490-ST, AutoStrobe Model 590, and SC-5000 II.
We do service discontinued products.
If you need to send your tuner in for repair, please open a 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. If you have not registered your tuner, you must do so before returning it. Include a description of your problem. Please be specific about the type of malfunction as well as the conditions under which it occurs.
There is a minimum charge of $80.00 US plus a shipping charge for all Mechanical Peterson tuners received and a minimum charge of $40.00 US plus a shipping charge for all LCD Peterson tuners (unless subject to Peterson warranty). Payment options include PayPal, VISA, MasterCard, AMEX and Discover Card.
NOTE: For international (non-USA) repairs and for all Conn tuner repairs, a different procedure may apply. If you would like an advance estimate for service, you must include a request in writing with the tuner you ship.
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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What power supplies can be used with my Peterson Pedal Tuner? ( StroboStomp 1 & 2, Stomp Classic & StroboStomp HD/LE/Mini )
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)
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?
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?
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Peterson Connect does not detect my Stomp Classic in Linux environment.
Chrome needs access to /dev/hidraw*, so either set "chmod a+rw /dev/hidraw*" or start chrome as root with the --no-sandbox option
*Some Ubuntu based distros do not allow running Chrome as root with the --no-sandbox option enabled. -Running as root without --no-sandbox is not supported. See https://crbug.com/638180. You can however run Chromium as a normal user and invoke that option.
Some users have reprted a fix by adding a new udev rule as follows: KERNEL=="hidraw*", SUBSYSTEM=="hidraw", MODE="0664", GROUP="plugdev", ATTRS{idVendor}=="2368", ATTRS{idProduct}=="*SEE BELOW"
* Some Peterson products operate in two different modes with individual product id's for firmware update operations. Multiple rules may need to be created. Here is the list of Peterson USB product ID's
idProduct =
Stomp Classic = 8002
StroboPLUS HD = 0003
StroboPLUS HD Firmware Mode = 8003
StroboClip HD = 8004
StroboStomp HD = 8005
StroboPLUS HDC = 0006
StroboPLUS HDC Firmware Mode = 8006
If there is trouble connecting or reconnecting as a product is switching modes, ex: StroboPLUS HDC product id 0006 to StroboPLUS HDC Firmware Mode 8006 run the command:
"sudo chmod a+rw /dev/hidraw*"
This command will solve any "waiting on user input" or if the update button in Peterson Connect is unresponsive. The command may need to be executed more than once.
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What is my Stomp Classic’s Sweetened Tunings feature all about?
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Which Peterson products work 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 Stomp Classic?
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I often tune my acoustic instrument in a loud environment. What's available to help with that?
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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What features of my Stomp Classic can I configure with Peterson Connect?
- Configure the order and number of sweetened tunings in your device's available tuning list.
- Design up to 10 custom presets using the tunings from your sweetened tunings list.
- Create your own sweetened tunings with custom offsets and note names.
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How do I send my product in for repair?
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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What is the difference between an 'On-Board Sweetener' and a 'Preset'?
'Presets' allow you to combine any of the On-Board Sweeteners with other settings that your tuner offers such as Concert A, Global Cent Offset and Transposition. Up to 10 presets can be stored for quick access on your hardware. You can access these other settings by hovering your mouse over the Preset and clicking the gear icon.
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Will the old desktop version of Peterson Connect still work?
WARNING: Running the standalone desktop app and the Chrome add-on concurrently can cause USB driver conflicts and result in corrupted data. Uninstall or disable the Peterson Connect Chrome add-on before opening the older standalone desktop application.
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Which browsers support 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 does the number beside the note name on the Stomp Classic’s display mean?
In the heat of the moment this can happen on stage unless the tuner has an octave indicator like the Stomp Classic.
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What do the switches on the rear side/north face of the Stomp Classic do?
1. MON: Monitor operation only. The tuner is on and displays state of pitch at all times, whether muted or un-muted.
2. TB: True Bypass operation only. Tuner is active and connected to the signal path only when muted, otherwise it is electrically off and physically out of the signal path.
3. DI: DI mode. Tuner is active and its display visible only when muted, DI is active at all times but also mute-able.
The switch on the right controls the signal level before it enters the DI circuit to ensure a clean output with lots of headroom and enables the following:
1. 0dB: DI output setting suitable for passive acoustic and bass guitar signals.
2. -10dB: DI output setting suitable for active acoustic and bass guitar signal.
3. -20dB: DI output setting suitable for active acoustic and bass guitar signals.
The switch in the lower middle is a ground lift switch and is used to avoid hum caused by ground loops.
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I would like string numbers instead of notes on the tuner display, can the Stomp Classic do that?
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How do I calibrate the Stomp Classic to a fixed instrument like an electric piano or keyboard?
1. Plug the Stomp Classic into the keyboard or piano ¼” output socket.
2. Press the MENU button until “A440” flashes.
3. Play the A above middle C on the piano or keyboard.
4. If the Strobe image moves clockwise, increase the Concert A value on the Stomp Classic by pressing the + (plus) button until the image hovers or stops.
5. If the Strobe image moves counter-clockwise, decrease the Concert A value on the Stomp Classic by pressing the – (minus) button until the image hovers or stops.
6. The Concert A pitch of the piano will be displayed on the screen
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How do I tune a half step down with the Stomp Classic?
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Can I use the Stomp Classic to set my electric guitar’s intonation?
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How can I attach the Stomp Classic to my pedal-board?
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Is the Stomp Classic firmware updateable?
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What is the function of the metal bracket on the north face of the Stomp Classic?
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Can I use the Stomp Classic to drop-tune?
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Can I use the Stomp Classic for open tunings?
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Can I use the Stomp Classic to tune a pedal steel guitar?
Of our currently available tuners, StroboPLUS HDC, StroboStomp HD, and StroboStomp LE have pedal steel Sweeteners and are very popular among the pedal steel community.
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Does the Stomp Classic have a manual tuning mode?
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Does the Stomp Classic have an Auto-Off function?
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I have several instruments with different tuning settings, can I go quickly from one to another on a Stomp Classic?
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Is the Stomp Classic a good tuner for guitar tech/stage work?
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Does the Stomp Classic have the James Taylor style tuning settings?
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What special electric guitar features does the Stomp Classic have?
For 12 string electric guitars like Rickenbackers, the Stomp Classic has a special preset called 12S for the standard and octave strings. To choose this setting, press the MENU button until the Sweetener parameter flashes (default is EQU) and then press the + or – (plus or minus) buttons to change the value to “12S”.
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What special electric bass features does the Stomp Classic have?
For bass guitar, upright bass or contrabass, the Stomp Classic has a special preset called “BAS”. To choose this setting, press the MENU button until the Sweetener parameter flashes (default is EQU) and then press the + or – (plus or minus) buttons to change the value to “BAS”. For basses with the Buzz Feiten Tuning System built-in, there is the BFB preset which has the correct offsets for tuning and intonation pre-programmed, select it as described above.
Then tune the strings, image moving clockwise means you’re too sharp, image moving left means you’re too flat. Tune until the image displayed on the tuner screen stops moving continuously in any one direction. The Stomp Classic also has a high quality built-in active DI, which is mute-able, a real boon for bass players. In short, there is no more bass-centric pedal tuner than the Stomp Classic!
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Can I tune overtones with the Stomp Classic?
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What do the Stomp Classic’s Dobro/Resonator Sweeteners (DB0 & DBH) do?
To choose this setting, press the MENU button until the Sweetener parameter flashes (default is EQU) and then press the + or – (plus or minus) buttons to change the value to “DB0” or “DBH” as desired.
Of our currently available tuners, StroboStomp HD, StroboStomp LE, and StroboPLUS HDC include the DBO and DBH Sweeteners.
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What should I do if my new Peterson product doesn't seem to work properly?
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Tuner appears to come on and go off immediately after plugging in cord.
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Is the Stomp Classic really 100% True Bypass?
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How is the Stomp Classic constructed?
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Can the Stomp Classic improve my guitar’s sound?
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Is the Stomp Classic display visible in bright daylight?
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What is the warranty period on the Stomp Classic?
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Does the Stomp Classic have a built-in microphone?
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How do I save presets/favorite settings for quick recall on my Stomp Classic?
Press the menu (far left) button until the parameter that you want to change starts flashing (most commonly Sweetener) Press the +/- buttons to select the value you desire for that parameter. Use the menu to select additional parameters and the +/- button to adjust their values.
When you have finished adjusting all values to your liking, wait for the flashing value indicator to stop.
Next, press and hold the + button until the screen shows the word ‘ADD’. If you do not see the word ‘ADD’ but do see a dash(-) in the lower right corner, the values you have chosen already exist as a preset and cannot be added again.
When the ADD process finishes, that preset will be added to the list of up to 9 preset spaces available. You can now simply press the preset button to quickly cycle through your presets (favorites).
To remove or delete a preset, hold the minus (-) button. The letters ‘REM‘ will show and the preset will be deleted.
The preset containing EQU ( equal temperament ) will always be part of your preset list unless you intentionally remove it by using the method above. Note that when parameters are set to their default setting, they will not show on the screen. EQU is the default sweetener, 440HZ in the default Concert A reference and 0 is the default Drop /Capo value.
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The Stomp Classic will not turn on.
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Windows 10/11 presents "USB device can't be recognized" error when I plug in my tuner.
A restart of your computer will usually solve this issue.
After your computer powers off, restart your computer, plug in your tuner, and the USB drivers should install automatically.
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My LCD screen is going dim.
Powering the unit with the provided or suggested power supply can also help determine if the LCD screen is in fact failing. If the LCD is still dim after changing the batteries or plugging the unit directly into a wall outlet, please open a help ticket so we may assist you further.
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My LCD screen is going dim.
Powering the unit with the provided or suggested power supply can also help determine if the LCD screen is in fact failing. If the LCD is still dim after changing the batteries or plugging the unit directly into a wall outlet, please open a help ticket so we may assist you further.
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What is the range of Hz calibration or Concert A calibration of my Stomp Classic?
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I've registered my StroboPLUS HD or Stomp Classic but the website will not allow me to configure or update my device.
Although you may have registered your warranty and serial number, until the site gets a read on your connected device for the first time, it cannot pair that physical device to your warranty registration and serial number and therefore will not allow it to be programmed. This is called 'pairing'.
Be sure to be logged in to the same account in which you registered your warranty. If using Peterson Connect for Google Chrome, you will be asked to 'pair'
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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.
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Not finding an answer? Open a support ticket for personalized support of your Peterson product.
Product Manuals
Not finding an answer? Open a support ticket for personalized support of your Peterson product.
Firmware History
Stomp Classic Version 1.0.06
Thursday, May 4, 2017 3:01:00 PM EDT
- Various bug fixes and performace improvements.
Stomp Classic Version 1.0.05
Tuesday, September 24, 2013 9:40:00 AM EDT
- Various Bug Fixes
Stomp Classic Version 1.0.04
Wednesday, August 7, 2013 10:37:00 AM EDT
- Note display default is now the sharp ( # ) version of en-harmonic equivalents. Previously a combination of sharps and flats ( #/b ) were used.
- Peterson Connect now supports characters P and L for custom octave names ( Pedal and Lever indicator for Steel ).
Stomp Classic Version 1.0.02
Sunday, January 1, 2012 2:01:30 PM EST
- Enables Peterson Connect functionality
- Various Bug Fixes.