ATV2 upsamples 44.1K CD to 48K

From ATV2 optical audio output my DAC lights up 48K when I'm streaming my ripped CDs (lossless) which are all 44.1K. The Airport Express previously in the exact position streamed at 44.1K. with the corresponding light lit.
I wrote one of the designers who I know at the manufacturer (Bryston) and here is his reply:
"""I would prefer not to have the bitstream converted from 44K1 to 48K, as this
is not an even multiplication, but there may be no choice in the matter, unless you can force the Apple TV to output 44K1. I don't know that this conversion will cause artifacts for sure, but the possibility is there."""
The DAC itself has an optional upsample button that doubles the input resolution.
Any audiophiles or audio technicians care to weigh in on this? What artifacts would be introduced by upsampling twice? Is the original signal being compromised by being changed initially?
I am speaking purely audio… from iTunes to ATV to my stereo. No TV involved.

I am also uncomfortable with this upsampling.
I don't have an atv2 yet but this will result in interpolation of virtually every sample after the 1st, so you won't hear the proper lossless bitstream at all.
Many people may not care or hear a difference but that's not the point, it should at least be able to output 44.1kHz material as is, compressed source or not.
Message was edited by: Alley_Cat

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ATV2 upsamples 44.1K CD to 48K

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