Peterson AutoStrobe 490ST Piano Stretch Tuner

Capable of handling “stretched” interval tuning, this is the instrument technician’s most valuable tool. The Peterson AutoStrobe 490ST offers a vast array of selectable “stretched” tuning options, including pianos of all types. Enjoy the instantaneous response times that only a Peterson can deliver and the relative tuning display of any audio source to 0.1 of a cent (1/1000 of a semitone) accuracy!

With the Model 490-ST, students, technicians, and musicians of all levels can utilize automatic (hands-free) note selection for absolutely the most accurate tuning of any instrument. Key features including real-time display of intonation to improve performance and listening skills while playing as well as mutable throughputs for in-line (yet silent) tuning during performances round out the package!

FULL RANGE TUNING

Automatic Image Clarity helps identify extremely high or low notes with the push of a button.

The DISPLAY +2 / -1 push button changes the strobe motor speeds to allow the audio input to be displayed on the higher or lower bands on the strobe disc.

Altering the speed of the motor permits viewing the extreme upper and lower registers much more easily.

SIMPLE CONTROL

Designed for “user-friendly” operation with little need for interaction once the initial desired settings have been entered.

Hands-free tuning can be accomplished via the built-in mic or plug in a microphone for additional control of the sound source.

Automatic Note Detection continually adjusts motor speed for viewing of the input sound relative to the nearest standard pitch.

USA MADE

Proudly designed, manufactured, and tested in Alsip, IL U.S.A.

Since 1948, Peterson Strobe Tuners is deeply committed to innovation as well as excellence in design, manufacturing, and customer service.

FEATURES 

• Wide Selection Of Pre-Programmed Stretch Files - Tables With Optimized Tunings For All Piano Types And Sizes. Up To 31 Additional Files May Be Programmed By The User.
• Automatic Note Selection
• Automatic Image Clarity And Contrast Control - Internal Compensation For Optimal Viewing Over A Wide Range Of Source Pitch And Volume.
• Enhanced Clarity For Upper And Lower Register Notes - +2/-1 Display Feature Shifts The Strobe Patterns Into More Visible Middle Ranges - Bass Note Patterns Can Be Displayed Two Octaves Higher And Treble Note Patterns Can Be Displayed One Octave Lower In Strobe Display.
• External Input And Through Output With Mute - For In-Line, Silent Tuning During Performances.