The Greaten AP 300 Pro elevates the digital wind instrument experience for seasoned players. It boasts an expanded sound library of 108 high-quality voices with 8GB sound samples, including a wider selection of ethnic instruments for global musical exploration. The AP 300 Pro’s refined 7-octave metal roller provides even greater precision when navigating pitches. A new Pro edition is the integrated equalizer, allowing you to sculpt your sound and achieve the perfect sonic signature. While it retains the AP 300’s built-in speaker and Bluetooth connectivity, the AP 300 Pro caters to the needs of professional musicians seeking a more comprehensive digital wind instrument experience. And the good thing is we can update the firmware of AP 300 Pro by connecting it to a computer running Microsoft Windows and using the update tools to install the updated firmware.