Irdac 2 suddenly playing dsd 256

[terrys99]

Hi all
I noticed something strange.
After selecting my arcam driver. It allowed me to play dsd 256.
This is unusual as it never allowed me to select 256.

I didn't realise it at the time but it was playing at dsd 256.

Thing is the irdac only allows 64 128.

Why would this play?
Driver also informs me 11289600hz.

[sq225917]

Is it DOP?

[terrys99]

i have no idea if its playing dop
iam using hqplayer has well as jriver/
i f select 256 in any of those players, it plays? looking at the irdac specs its 64 128.

i did notice that playing 256 sounded a little better, no idea why. driver info says playing at 11..... 256.
to use dop you would need to tell the driver to use it. which iam not

i noticed in hqplayer the cpu peaks at 20% with 256 where as 128 12%.

i have just set jriver to 4x native dac

and it players ok sound about 2 db lower than 128, jriver tells me no changes being made playing at 11.3.

confused...