My PerfectWave dac is working!

No, the lock light remains green on the dac when the cxc is in standby. I assumed because it’s selected as the source. 
 

I’ve yet to hear the monoblocks with the ML’s. They arrived 3 weeks ago, but I had to wait for a preamp to arrive. Prior to that I was listening to a tube integrated. But since the amps and pre arrived I’ve had no sound. 

The dac does the identical thing with the usb connection. If my computer is off the dac still displays a green dot with a blue light on the dac. Why, because a usb connection is made on the PWD. 
 

The fact that I also have zero sound with the phono pre connection means something else is happening, other than the dac. What, I haven’t a clue.
 

I’ve a pair of class a monoblocks on the way. If they don’t work, at least I know that the problem isn’t the tube amplifier’s, which I’m not suspecting anyway. 

You have narrowed the problem down to the amplification, so if I was you I would forget trying to tweak the DAC.  So lets talk about the amps

   Do you still have the previous integrated amp that you used?  If so try connecting the pre amp of the integrated to the power amps.  If everything works then the problem is the new pre amp.

   If that doesnt solve it connect the new pre amp to the power amp section of the integrated ..If you get sound then the problem is in your power amps.

   If you no longer have the integrated, perhaps look to buy an old integrated or AVR from a charity shop or ebay.  It could be old as long as it works.  Then use that for your testing

I still have 2 tube integrated’s. I’ll try the one I just purchased brand new last year. Thank you!