Check the listing for details. Peterson AutoStrobe 590 Mechanical Strobe Tuner Metronome Tone Generator. Condition: New. Listed at 1350.00 USD. The AutoStrobe 590 is a mechanical tuner that comes complete with built in tone generation and a metronome via headphones or internal speaker output. It combines input audio for contrast against on-board reference pitches.The AutoStrobe 590 is THE preeminent mechanical strobe tuner for tone generation and metronome facilities. It combines both input instrument tone and audio standard reference tone at the output for simultaneous visual and audible tuning along with exceptional intonation training! The 590’s key features (automatic note tracking and audio tone generation capabilities) make it a favorite in the classroom, at the factory, or backstage. And as usual, only a Peterson can respond at the speed of light to display relative tuning information extracted from any audio source down to 0.1 of a cent (1/1000 of a semitone) accuracy! Finally, utilize automatic (hands-free) note selection for fast tune ups of instruments. Proudly made in the USA. 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. Power Supply: Built-In (IEC) Foot Pedal Control: Metronome On/Off Peterson Connect Compatible: No Stretch Tuning Tables: No Note Range: C1 to B8 Note Selection: Automatic Or Manual Form Factor: Desktop/Bench Accuracy: 0.1 Cents Display Type: Single Analog Strobe Disc Display Resolution: Infinite (Analog) Construction: Metal Casing Product Dimensions LxWxH: 13.4" x 6.375" x 3.5" Product Weight: 8lbs. (3.30kg) USB Port: No Power: AC 100V to 240V Built-In Microphone: Yes Built-In Speaker: Yes Volume Control: Yes Headphone Jack: Yes Metronome: Yes Inputs: 1/4" Jack Outputs: 1/4" Thru, 1/4" Speaker Output Mute-able Output: No Tone Generator: C2 to B6 (65.40Hz -1975.53Hz) 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 User Presets: 64 User Presets