eXtream Software Development specialises in high quality audio playback and recording apps for Android and iOS. When the company started out with their multitrack audio/MIDI sequencer, 'Audio Evolution Mobile Studio', the need for high quality recording to bypass the audio limits on Android became apparent. A custom USB audio driver was made to record and playback at any supported sample rate and resolution from USB audio interfaces. This technology found its way into 'USB Audio Player PRO', a media player on Android that can now drive USB and internal DACs for bit-perfect high resolution playback. With its embedded MQA decoder, MQA tracks can now be experienced on many Android devices. Additionally, with the included Tidal support, a rich collection of MQA music is now accessible to Tidal HiFi subscribers.