The OLED display and physical buttons make navigating the settings menu and looking at the playback display more straightforward and intuitive. In addition, the KA5’s built-in MCU processor handles complex operations with ease, further making the KA5 a joy to use. 
 
*Volume buttons A/B mode 
A mode: 
Volume+ button: short press once to increase volume 1 level, long press for 2 seconds to play previous track, and press to go page up in settings menu.  Volume– button acts in the opposite way. 
B mode: 
Volume+ button: short press once to play previous track, long press to increase volume, and press to go page up in settings menu.  Volume– button acts in the opposite way.