Peterson Autostrobe 490 Tuner

The original Autostrobe, the AS490 allows students, technicians, and musicians at all levels to utilize automatic (hands-free) note selection for fast, accurate tuning.

Only Peterson strobe tuners respond at the speed of light to display relative tuning of any audio source to 0.1 of a cent (1/1000 of a semitone) accuracy. Automatic image clarity and contrast controls provide internal compensation for optimal viewing over a wide range of source pitch and volume while +2/-1 display feature shifts strobe patterns into more visible middle ranges. Other features include real-time intonation for improved performance and listening skills, automatic note selection, easy transposition for B-flat, F, and E-flat instruments, and external input and through output with mute for in-line, silent tuning during performances.