I’m experimenting with adding a Mutec Ref10 SE120 as the clock reference for the Vivaldi Clock. The Mutec spec lists square wave output at 75ohm but when I configure the Vivaldi Clock reference setting to TTL it has no lock to the Mutec. Changing it to AC then it locks with no issue.
Tested two 75ohm clock cables (a Van Damme and an Audioquest) with the same result. Wonder if anyone has similar experiences or know if TTL or AC is the correct setting for the Mutec?