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1. HTC U Ultra 2. Android 8.0.0 (Stock rom) 3. The option of Hi-Res output for USB DAC - Sonata HD Audio is limited to maximun 24bit/96kHz (but the device is support up to 24bit/192kHz) and HTC U Ultra can also play the format FLAC 24bit/192kHz (tested) but the sampling rate are limited by Poweramp, USB DAC Sonata HD Audio should be support up to PCM 24bit/192kHz with Cirrus Logic CS42L42 chips will it release the restriction for support 24bit/192kHz output options??