Review on Advanced Precision: Peterson AutoStrobe 490 Strobe Tuner for Professional Instrumentists by David Ross

As a maker of musical instruments, I have several tuners that have served me well over the years, but I was looking for a device that could identify certain notes more clearly, which other tuners don't like . I also wanted a tuner that would measure the harmonic positions in a complex sound. It's difficult sometimes, but I think the Auto Strobe 490 can do it. My first tuner was a Yamaha PT4 which was around $1000 in 1976. It was very good, but the Peterson Auto Strobe is a big improvement. this can go on for a long time. I make woodwinds but I also have other types of tuning instruments, accordion reeds and some stringed instruments. One of the characteristics of this type of tuner is how it indicates how the note is decaying. Extreme precision may seem excessive for working with musical instruments, but there are times when measuring pitch to within a thousandth of a semitone is useful.