Here I have shown the real (as accurately as the tablet gyroscope and the RPM program allow) detonation coefficient of the Vega 108 electronic recorder, although a new support bearing was made, based on an aluminum cup, fluoroplastic bushings and a thrust bearing. The plastic subdisk was turned on a lathe to eliminate vertical beats. The disk drive circuit was improved in order to achieve long-term stability of disk rotation, for this purpose, parts were replaced in the stock circuit and thermistors were introduced. I also entered a speed of 78 instead of 45. For comparison, I will cite the detonation of the Reloop 7000 measured by me. It was 0.07% at all three speeds, while the declared in the passport is 0.01%. On my Vega 108, the coefficient detonation at 78th speed is maximum 0.03% and 0.06% at 33.3 rpm with the declared - 0.15%. It would be more correct to measure detonation by reproducing a frequency of 3150 Hz from a test record, but you need a detonometer. And this method is more accessible and quite reliable, as practice has shown. When measuring detonation with an Android device, be sure to turn off the mobile Internet and Wi-Fi, otherwise the readings may be distorted due to brakes in your tablet or smartphone, if there is activity on the Internet during the measurement. The accuracy of measuring revolutions depends on the accuracy of the gyroscope used in your smartphone. It varies slightly in different smartphones. But the accuracy of the gyroscope does not affect the accuracy of measuring low-frequency detonation (WOW), since this is a relative value. But it should be borne in mind that the high-frequency component of detonation (FLUTTER) is not included in the final result. The device, apparently, cannot measure it. Therefore, the obtained result of detonations is slightly underestimated. The work of the network and quartz stroboscope is shown and compared. If the topic is interesting, ask questions, correct, share your thoughts in the comments. If I see interest in the topic, I will post new video materials on improving the Vega 108, setting up the player. Send here measurements of the speed and detonation of your players, do not forget to indicate the player model. (Send me your WOW fnd FLUTTER resullts)