The HumminGuru S-DUO stylus cleaner for record needles uses 110kHz of ultrasonic cleaning frequency which creates much smaller cavitation bubbles to remove dust, grime, and hardened dirt off the stylus tip thoroughly. It is the First and Only stylus cleaner uses ultrasonic technology in the existing market. (When the frequency is lower than 20kHz is only considered as vibration but not ultrasonic technology). | Cleaning the stylus in the ultrasonic bath with water requires zero physical contact and thus it is risk-free to the surface of the stylus. Unlike those record needle cleaner that utilize motor vibration to clean the stylus with physical direct contact. | The digital turntable cartridge pressure gauge is cleverly incorporated into the HumminGuru S-DUO device that makes the setup more convenient, faster, and easier for the user. | With the feature of a bi-directional LCD display, the user can simply flip the device around and measure the downforce right after ultrasonic stylus cleaning. | The turntable stylus cleaner and force scale gauge(2-in-1) is compatible with different types of cartridges such as Audio-Technica VM520EB, Denon DL-103, Denon DL-102, Ortofon 2M Red, etc.