LED Tuners

A needle, LCD or regular LED type tuner uses a microprocessor to measure the average period of the waveform. It uses this to then drive the needle or array of lights. The array of lights from LED that appears to move to left or right seems better than the meter needle of the early meter tuners. When the musician plays a single note, the tuner senses the input from the microphone or input jack (from an electric instrument). The tuner then displays the input frequency in relation to the desired pitch and indicates whether the pitch of that note is lower, higher, or approximately equal to the desired pitch. With needle displays, the note is in tune when the needle is in a 90° vertical position, with leftward or rightward deviations indicating that the note is flat or sharp, respectively. Tuners with a needle are often supplied with a backlight, so that the display can be read on a darkened stage. An early (1970s) meter needle tuner seemed inferior (more difficult to use) than the more expensive light emitting diodes (LED) type.

Recommended LED Tuner Manufactures

• Planet Waves — Headstock Tuner
• Ko'olau Guitar and Ukulele — 'Ohau Chromatic Tuner, no frills reliable tuner.

Strobe Tuners

Strobe tuners (the popular term for stroboscopic tuners) are the most accurate type of tuner. There are three types of strobe tuners: The mechanical rotating disk strobe tuner, an LED array strobe in place of the rotating disk, and "virtual strobe" tuners with LCD displays or ones that work on personal computers. A strobe tuner shows the difference between a reference frequency and the musical note. Even the slightest difference between the two will show up as a rotating motion in the strobe display. The accuracy of the tuner is only limited by the internal frequency generator. The strobe tuner detects the pitch either from an TRS input jack or a built-in or external microphone connected to the tuner.

Recommended Strobe Tuner Manufactures

• Peterson Strobe Plus
• Planet Waves
• Sonic Research

Peterson Electro-Musical Products, Inc.

Peterson Electro-Musical Products, Inc. is a music-electronics company founded by Richard H. Peterson in 1948.[1] The Peterson company introduced the first commercial hand held electronic tuner for musicians, the Model 70, in 1964, and later its models of strobe tuners became popular among touring and studio musicians such as the Grateful Dead, The Who, Pink Floyd, Frank Zappa, Jimi Hendrix, and Neil Young.[1] Since its inception the company has also contributed notable inventions and innovations to the electronic organ, and its products are in use in many thousands of pipe organs, and hundreds of thousands of electronic organs, worldwide.