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Although human ear is very sensitive to changes in speed of record being played, regular check if platter revolution speed is equal to reference one is highly advisable.

JR Audio control solution lets test not only platter speed but the whole set platter - record in real time due to small dimension and light weight of the disc. In an easy, comfortable and precise way you can test any turntable on any of 3 standard speed.

Strobe disc
Strobe disc
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50 Hz Stroboscopic torch
50 Hz Stroboscopic torch
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