The Peterson Strobe Center 5000-II utilizes a user-intuitive layout to accurately measure each scale note with unsurpassed precision. This easy, simple, and fun-to-use tuner derives its 12-window strobe-tuning technology from a high-precision digital microprocessor and motor control mechanism to provide a versatile piece of pitch measuring equipment with unsurpassed accuracy and features. Simply recall and use specialized applications, such as built-in stretch tables, to calibrate even the most inharmonic instruments. Or, program your own custom temperaments and tables into our user definable memory bank.

Use this device to practice and hone your sense of intonation within 1/10th of a Cent, easily transcribe keys, or calibrate to any pitch standard–all with both lightning-fast response time and noise free operation…no warm up time required! Plug in or use our handy built-in condenser microphone to get into the unit and you’re ready to go! The 5000-II is guaranteed to be a pleasure for all educators, students, maintenance professionals, manufacturers, and others to use for their precision tuning needs.


"Stretch" refers to specific adjustments in the frequencies (pitches) of notes to enhance the overall quality of tuning within an instrument.

The SC5000-II includes several built-in stretch tables which may be used for tuning pianos. Users can create and program their own preferred custom temperaments and custom stretch tables into the user preset section.


Musicians can practice with the Peterson Strobe Center 5000-II while viewing an entire chord in which they play a part.

Keeping an eye on harmonic content is a tremendous aid to improved tone quality.


Standard tuning temperament suitable for regular or alternate tuning, 100 cent intervals - no Sweetening.

Historic Temperaments

Kirnberger III Temperament
Werckmeister III Temperament
Young Temperament
Pythagorean Temperament
Just Major Intonation
Quarter Comma Meantone Temperament
Kellner Temperament

Stretch Tunings

Useful for all concert style grand pianos of approximately 8 feet in length or greater. This minimal stretch profile may also be of use on smaller pianos strung with thin piano wire or in situations where the user wishes a greater coherence of fundamental pitch throughout the instrument.
Optimal for a 6’ to 7’11 range of grand piano.
Taken from optimal settings for vertical and grand pianos of many makes and sizes, this profile will produce a reasonable tuning for non-critical applications. It also provides a good starting point for creating your own stretch profiles.
Useful for grand pianos that are 5’10” or smaller in scale.
Suitable for vertical pianos equal or exceeding 51 inch.
Taken from optimal settings for many makes and sizes of vertical pianos, this profile will produce good results for any vertical-style piano in typical playing environments for such pianos.
Designed for vertical pianos in 39 inch to 51 inch range.
Designed for vertical pianos smaller than 39 inch, this profile is the most extreme (farthest bass and treble note stretching) of these piano preset stretches.

Compare to Sweetened Tunings offered in other products.


Manufacturers and musical instrument maintenance professionals will be pleased by the extraordinary versatility of the Peterson Strobe Center 5000-II.


Simple LCD menu displays with four function key switches easily address the multiple functions of the SC5000-II.


Intonation of the higher partial tones can only be seen correctly when using the 12-window strobe-tuning method.


Precision microprocessor digital and motor control technology provide instantaneous imaging of note pitches as well as simultaneous viewing of harmonies and overtone frequencies in sounds.

Stretch Tuning Tables: 8 Piano Stretch Tables

Note Range: C1 to B8

Power Supply: Built-In (IEC)

Note Selection: All Notes Visible

Peterson Connect Compatible: No

Accuracy: 0.1 cents

Form Factor: Desktop

Display Type: 12 Analog Strobe Discs

Display Resolution: Infinite (Analog)

Construction: Wood Casing

Product Dimensions LxWxH: 21.25" x 14.25" x 7.5"

Product Weight: 25lbs

USB Port: No

Power: AC 100V to 240V

Built-In Microphone: Yes

Built-In Speaker: No

Metronome: No

Inputs: 1/4" Jack

Mute-able Output: Front Panel Control

Outputs: 1/4" Thru

Concert A Range: 350Hz to 550Hz

Global Cent Offset Range: +/- 50 Cents

Transposition Range: Keys of C, Bb, F, Eb

Frequency Response Range: 32.70Hz to 7902.13Hz

Warranty: 1 Year

Sweetened Tunings: No

User Presets: 225 Temperaments / 31 User Stretches

Historic Temperaments: Yes

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.

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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 high definition. They require very precise 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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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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Which Peterson products work with Peterson Connect?

Currently, the StroboPLUS HD and the Stomp Classic Pedal Tuner / Active DI are compatible with Peterson Connect.

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How do I find out how far out of tune my guitar is in cents?

Pluck a string and adjust the cent value by simply adjusting the cent control until the strobe image is stationary (only fluctuating around a fixed position and not shifting in one direction over time). In this case, you are tuning the tuner to the instrument. When the image comes to rest, the accompanying numeric cent display indicates the distance from 00.0 cents.

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Peterson Electro-Musical

Products Inc.

11601 S. Mayfield Ave.

Alsip, IL 60803

Ph. 708-388-3311

Fax 708-388-3341

Business Hours

8:00AM - 5:00PM CST M-F

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