![]() ![]() it is in excellent condition, and other than for the once or twice a year intonation exams it sits safely tucked away in its case in my closet. Slight perceived movement to the left or right means the incoming tone is flat or sharp, respectively. Peterson 420 Strobe Tuner Reverb Similar Listings Peterson StroboFlip Strobe Tuner 150 25 price drop 125 Used Good Free Shipping Add to Cart Peterson StroboClip HD High Definition Clip-on Strobe Tuner (2-pack) Bundle 139.98 20 price drop 119. This is a Peterson Strobe Tuner, model 420, that I have had since the early 70s. Posts: 36 Country: Peterson Model 420 Strobe Tuner advice on the Repair on: December 20, 2020, 03:08:06 am Hello again, to everyone on the EEvblog I would like to start out by making it clear I am not a professional in electronics repair. When the flashes of the neon light correlate to the speed the marks on the disk are going around, you get the same strobe effect you see with cameras and synchronized moving objects - the marks on the disk slow down as you get closer to being in tune until they stop moving. As for how it works, basically it amplifies the incoming sound signal and flashes a neon light with it, then it has a disk with a whole bunch of black and white segments in rings that correspond to octaves at a fixed, though switchable, frequency using a stepper motor and a low drift oscillator. Like Peterson’s high-end units, the Stomp Classic is accurate within 0.1 cents, making it five to 10 times more accurate than other pedal tuners (most of which are accurate to. ![]() I also put in a built in electrolytic mic with a switch so I could use it without an external mic, though other model 400s sometimes had a built in one. Mine was reading a fair bit off what it should, turned out one of the leads on the polyester caps that formed the main oscillator had broken (it was like 4 caps bundled together), so reconnecting it brought it back much closer to calibration. The Model 420 tuner has a 1/4' input in the front for plugging your instrument in and it also has a built in power cord. A single tempo map can play an entire score of meter changes, accent patterns, subdivisions, bar colors, silent bars and gradually curved tempo changes like accelerandos and ritardandos. It's got a classic sort of look to it, although I'm not sure what year this was originally made. ![]() I refurbed one a year or two ago and replaced the main filter caps as well as earthing the chassis - the default cord just floats the chassis between filter caps and when I touched it on a concrete floor (though not on wood) I could feel the tingle. Peterson Model 420 Vintage Strobe Guitar Tuner Condition: Used Time left: 2d 6h Saturday, 03:45 PM Current bid: US 300.00 1 bid Bid Amount Enter US 305. The Peterson 420 is a vintage strobe tuner that is designed for tuning guitar and other electronics instruments. ![]()
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