![]() Choose the 'Internal audio driver' option and select the HiRes driver. If your device is not recognized as having a HiRes audio chip, pull out the navigation bar from the left and select Settings. For 'known' devices you will be asked on start-up if you want to use the HiRes driver (this is asked only once of course and your selection is remembered). Since UAPP v4, you can choose which driver to use: the standard Android audio driver or the HiRes direct driver. ![]() ![]() ![]() Note that this direct driver is used with the internal audio of the phone in combination with headphones connected to the phone directly and is completely unrelated to the situation where you would use our USB audio driver in combination with a USB DAC. Using this direct path, audio can be passed to the chip in 24-bit at all the sample rates that the chip supports, without resampling or other audio degrading 'features' of Android. The HiRes direct driver in USB Audio Player PRO tries to work around that problem by accessing a so-called 'direct' audio path of the Android audio system. However, this chip is usually not available to third-party apps and can only be accessed by the media player that comes with the phone, or when it works, it works only at a fixed rate of 44100 or 48000Hz. Many recent high-end Android phones come equipped with a high quality audio chip. Hires direct driver in USB Audio Player PRO
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