iPad Pro USBC DAC issues
iPad Pro USBC DAC issues
- Subject: iPad Pro USBC DAC issues
- From: Gordon Rankin <email@hidden>
- Date: Thu, 28 Mar 2019 12:40:41 -0400
- Organization: Wavelength Audio, ltd.
- X_cmae_category: , ,
- X_cmae_category: , ,
All,
Filled a bug report (49382057) today for the following problem:
Using the new iPad Pro USBC edition it does not appear that the USB
Audio Class driver (1 or 2) is looking at the Asynchronous USB feedback
pipe and therefore the output stream is either under or over running the
buffers of the output device.
In the case of this report I used the Total Phase Beagle USB Analyzer in
between DragonFly Red (also some of my Wavelength DACS HS) and with
Tidal played back an 88.2Khz sample off their Masters list, the entire
session the DAC was pegged asking for more data and the iPad continued
to just stream standard amounts of samples. Same true with tracks at
96KHz and higher.
Thanks,
Gordon
--
J. Gordon Rankin
Owner and Chief Scientist
====== Wavelength Audio, ltd ======
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