Can DDC of another brand be used on Denafrips Dac?Audio GD etc

Gents,

Thanks for the responses. 

The I2S connection that the La Voce has is compatible with other Aqua gear, but not with many others.  I connected the U18 via an AES EBU cord and I can say that it is plug and play with my iMac as the source.  It has been playing for a couple of days and I am prepared to say that it might well be the best $500 I have spent on a component is a long time, right up there with my Oppo 103.  I have Don Sachs new preamp and his 300b mono blocks driving Cube Audio Jazzon speakers and the SQ is stunning and yet improved with the addition of the Gustard unit. 

A further thought.  My audio pal just got the Berkeley DDC unit and I will be keen to compare how my $500 device compares to his $2500 unit.  I imagine all these DDC devices have a high degree of efficacy. 

I use a Di-20 with a pontus 2.... AES connection. Sounds great!