Any opinions on the AMR Digital Processor 777 Dac?

I am using ps audio ac-12 to great effect.

Does anyone know how to remove the top cover so you can access the tubes?

Yes.
Brian @

Yo2tup,
If you Google the manual you will see the diagrams included. It is easy to do -- just do steps one and 2 for replacing tubes. The only hitch is that you need the exact tools for removal. I found that anything smaller or bigger will not allow you to do the job. If you have one of those small tool sets you should be fine.

Thanks Sabai. I was able to do this and swapped the output tubes for some NOS Amperex tubes, and what significant difference it makes in terms of space, detail, and imaging! Reviews of the DP-777 say its a DAC for people that enjoy musicality and less concerned with details. After swapping the output tubes, it retains the musicality and adds the delicate details!