I use the E30 with my amp+speakers system, Tidal streaming via phone OTG cable.
What exactly can this app do for me:
https://www.extreamsd.com/index.php/products/usb-audio-player-pro
When connecting an Android phone or tablet to a USB DAC, USB Audio Player PRO will unleash the full power of the DAC, by using our custom developed USB audio driver. This bypasses the Android audio system completely, meaning that Android's limitations regarding bit resolution and sample rate (16-bit/48kHz) are made irrelevant and high quality audio streams are fed directly to the DAC, making playback up to 32-bit at 384kHz possible (depending on the DAC capabilities) or even DSD.
I gave it a try with the trial version and felt nothing except cutting bass a little and having to deal with a new interface.
What exactly can this app do for me:
https://www.extreamsd.com/index.php/products/usb-audio-player-pro
When connecting an Android phone or tablet to a USB DAC, USB Audio Player PRO will unleash the full power of the DAC, by using our custom developed USB audio driver. This bypasses the Android audio system completely, meaning that Android's limitations regarding bit resolution and sample rate (16-bit/48kHz) are made irrelevant and high quality audio streams are fed directly to the DAC, making playback up to 32-bit at 384kHz possible (depending on the DAC capabilities) or even DSD.
I gave it a try with the trial version and felt nothing except cutting bass a little and having to deal with a new interface.