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.

TEACHING INTONATION | Peterson Strobe Tuners


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.

BUILT FOR SPEED | Peterson Strobe Tuners


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

EASY NAVIGATION | Peterson Strobe Tuners


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

COMPLETE TONAL VIEWING | Peterson Strobe Tuners


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

INDEPENDENT CONTROL | Peterson Strobe Tuners


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.


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

Historic Temperaments

Just Major Intonation
Pythagorean Intonation with A base
1/4 Comma Meantone
Kirnberger III Temperament
Werckmeister III
Young Temperament with A base

Stretch Tunings

Concert Grand Piano Stretch Tuning.
Studio Grand Piano Stretch Tuning
Average Piano Stretch Tuning
Small Grand Piano Stretch Tuning
Upright Piano Stretch Tuning
Average Vertical Piano Stretch Tuning
Console Piano Stretch Tuning
Spinet Stretch Tuning

Compare to Sweetened Tunings offered in other products.

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

8 Reviews
4.9 out of 5 stars.
5 stars
4 stars
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2 stars
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By Craig Bennett on Monday, December 4, 2023

Verified Purchase

Reviewed on
Peterson Website
Plays 6-String Electric Guitar, 6-String Acoustic Guitar, 4 String Bass
I own and have owned many excellent Peterson Strobe Tuners in the past and recently came across a very good used SC5000 II and purchased it. It is amazing to use, especially when setting up guitars and pianos. Very easy to see and use to get the exact tuning desired. I especially like the stretch tunings as well as the customizable user tunings that can be saved. It is now my go to tuner for all things on instrumentation setups!

I would be remised to not mention Peterson's excellent support staff! I have called and generated support tickets in the past and Sue has been the person that responded to them. Always extremely helpful, especially with very old tuners. She is truly outstanding!

Peterson tuners I own and trust: SC5000 II, StroboStomp HD, Node 5070D, Models 400 & 420, and iStroboSoft!

I cannot say enough good words for this company and their products!

2 people found this review helpful.
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By Jeffrey Taranto on Friday, July 23, 2021
Reviewed on
Peterson Website
Plays 6-String Electric Guitar, 6-String Acoustic Guitar
Simply the best in the business. Hands down. Thank you for decades of Tuning ease & enjoyment !

3 people found this review helpful.
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By Carroll Tomlinson on Friday, September 11, 2020

Verified Purchase

Reviewed on
Peterson Website
Plays 6-String Electric Guitar, 6-String Acoustic Guitar, 4 String Bass, Mandolin
Phenomenal Tuner! Once you use it, you won’t ever want to use any lesser tuner.

2 people found this review helpful.
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By seb-ear-aaaa[@] on Saturday, August 25, 2012
Reviewed on
The main reason after an extra $3000 I did not opt for this as a main piece of gear was too many parts to break, and I do not work with bells, vibes, chimes, marimbas, etc enough. These are great for tuning church bells, and other things where the fundamental decays into a harmonic. If I do find one used at a good price I will buy another one. I use the 490 ST most of the time. It still will lock onto harmonics and wolf tones when I do not want it to. This will lock onto everything so my E will show on the E wheel, and if I have a minor 3rd harmonic that will show on another wheel. Wolf tones are not as big a problem either with this and 5ths, I liken this to the TV-2 vacuum tube tester to say the 752 model. 7 meters you have 6 more things to go wrong. The Peterson company still makes a pretty rugged instrument and a good case. Some things are better than ever, some are a little lighter in weight and not as tough. One huge improvement is a constant voltage power supply. Older Conn/Pete ...

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7 people found this review helpful.
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By  me-IvMsq on Tuesday, March 17, 2009
Reviewed on
Extremely precise, very easy to use, can tune chords, and it shows shows you the fundamental and overtones of each pitch it hears. The perfect tool.

3 people found this review helpful.
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By Colton the Bass Trombonist on Monday, December 8, 2008
Reviewed on
My high school band has one of these and it works amazingly well. This can tune an instrument from across a band room (30-55 ft) superbly. This is strongly recomended to anyone who needs to tune a group of people, though the price would lead me not to recomend it to an individual musician. An average electric tuner would be ideal for personal use. Band directors: get this tuner!

4 people found this review helpful.
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By ProfessorBadAss on Monday, April 14, 2008
Reviewed on
we use one of these tuners for highschool marching/concert band and it is very precise, the only bad thing about it is that it picks up every sound in the room.

5 people found this review helpful.
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By bluesplyr on Friday, January 11, 2008
Reviewed on
Well I thnk im one of the few people who has used this. It is amazing. I played guitar in a jazz band, and every instrument would tune to this tuner. The entire band would be synchronized in moments, it is amazing.

2 people found this review helpful.
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Does my SC5000-II require calibration?

Generally, your SC5000-II 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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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 SC5000-II’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 SC5000-II, 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 SC5000-II offers No unique and very accurate tweaks which often make all the difference.

Peterson Tuners - Sweetened Tunings

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Is there a carrying case available?

We have carrying cases available that are very useful if you will be frequently traveling with your Peterson tuner. You may purchase your case directly from us at Peterson.

Cases are available for the AutoStrobe™ line, the StroboClip HD and the StroboPLUS HD/HDC.

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