Spectral Audio users need your input

I would appreciate any input from Spectral Audio users on what type of digital front end they use. I sold my digital gear Theta Jade with Progeny DAC a few years back and I have been listening to Lps mostly. I am now looking for a used digital front end (1K to 1.5K) and I am curious what works well with the Spectral.
I have a DMC12 pre amp and DMA100 amp with Martin Logan ReQuest speakers

Thank you