Peterson 490-ST AutoStrobe 490ST Strobe Tuner with Stretch Tuning

Advanced Strobe Tuner for Precision Instrument Tuning
The Peterson AutoStrobe 490-ST is a professional-grade strobe tuner designed for musicians, technicians, and educators who demand the highest level of tuning accuracy. With its built-in stretch tuning capabilities, this tuner provides optimized tuning for string and percussion instruments such as pianos, guitars, basses, marimbas, steel pans, and more. The AutoStrobe technology offers real-time, hands-free note selection, making it an essential tool for fine-tuning any instrument with absolute precision.

Highly Accurate Strobe Display with Real-Time Feedback
Unlike conventional needle or LED tuners, the Peterson AutoStrobe 490-ST responds at the speed of light, displaying tuning accuracy down to 0.1 of a cent (1/1000 of a semitone). This unparalleled precision ensures that every instrument is tuned to perfection, whether in a live performance setting, a studio, or a repair workshop. The strobe patterns provide instant visual feedback, helping musicians and technicians detect even the slightest variations in pitch.

Customizable Stretch Tuning for Any Instrument
The 490-ST includes an extensive selection of pre-programmed stretch tuning tables tailored for different piano types and sizes. This feature eliminates the complexity of manual adjustments, making it easier than ever to achieve perfect intonation. Additionally, up to 31 user-defined stretch tuning files can be programmed, allowing complete customization to match personal preferences or specific instrument characteristics.

Enhanced Clarity and Visibility for All Registers
With its unique +2/-1 display function, the 490-ST ensures that bass notes can be viewed two octaves higher and treble notes one octave lower for enhanced visibility in the strobe display. This feature improves clarity, particularly in the upper and lower registers of pianos and other instruments. The built-in automatic image clarity and contrast control further optimize viewing conditions, making tuning effortless even in different lighting environments.

Hands-Free Operation and Seamless Connectivity
The Peterson AutoStrobe 490-ST supports automatic note selection, allowing musicians to focus entirely on their playing while the tuner detects and displays the correct note in real time. Additionally, the external input and through-output with mute function make it ideal for in-line silent tuning during performances or recording sessions. This allows musicians to fine-tune their instruments without disrupting their workflow.

Built for Professional Use with Optional Accessories
Designed for both portability and durability, the 490-ST is built to withstand frequent use in professional environments. Its compatibility with external microphones, footswitches, and carrying cases adds even greater versatility, making it the go-to tuner for serious musicians, piano technicians, and instrument repair professionals. Whether in the studio, on stage, or in a teaching environment, the Peterson AutoStrobe 490-ST delivers unmatched performance.