My Ultra tests

[canard]

Seems to be V2 that Amirm tested, same as onlyoneme.

?

 

[onlyoneme]

SINAD with 1 kHz tone measured by onlyoneme before fimware update, SINAD 110.7 dB :

View attachment 12410

…and after firmware update , exactly the same result as Amirm , SINAD 114.9 dB.

View attachment 12411

Second one was with the LPF. Firmware update didn't remove noise spikes.

 

[Musician]

Second one was with the LPF. Firmware update didn't remove noise spikes.

But it did lower the SINAD and the jitter ?
I guess we will have to wait for Vintageflankers measurements and ask him which pcb version he has tested.

( kind of crazy this - the WiiM products are the most tested streamers with real measurements in the world - compared to the crappy results by bluesound, PS audio and others . Still we are not satisfied )

 

[onlyoneme]

But it did lower the SINAD and the jitter ?

It has lowered jitter only.

 

[Steve Woodhouse]

Clearly measured as well as expected, which us to say as a DAC, yes it’s transparent.

Fortunately for me, I have no use for HDMI in, phono in or analogue in.