Hi. I have another idea for you. I've heard the ML39, ML30.6& ML31.5, EMC-1 I, RA CD55, Sony SCD-1 and Meridian 508.20. To me they are all within the same performance window with slight variation as to sonic signature, but not overall level of performance. After reading and seeing the separate DAC I bought a AudioMeca Mephisto II. I was replacing a Sony SCD-1 which had a near identical level of performance with the RA CD55. Right out of the box the soundstage increased from about five feet deep running from the plane of the speakers back to about fifteen feet deep running from my feet. It sounded like music and felt live and real. Ridiculously I started tapping my foot. Not something I spend a lot of time doing regularly.
Clearly something special happened. So, I'd like to suggest that you look into Mephisto II. I use it with ML335, PS Audio 600 and Dunlavy SCIV's. Seems kinda special.
Good luck.
Bill E.