What's a contender to an Audio Reference 5 SE?

Timztunzhi, from what I've searched on what you have, a EMM Labs DCC2/CDSD SE combo why haven't you done as EMM states, forget the preamp.

EMM Labs DCC2
"eliminating the need for a separate preamp, attendant buffer stages and additional set of cables. The result is a more direct signal path. Not to mention a more direct connection with the music itself."

Cheers George

11-17-15: Timztunz
@Georgelofi You are 100% correct sir. IF I keep the EMM Labs gear I have no need of a separate preamp. However, I'm contemplating moving away from that gear, in which case I will be in the market for a pre and a CD/SACD player.

Many cdp/dacs these days have the same output and volume adjustability as the EMM gear, and are just as capable of driving the amp direct as well.
Wait to see what you replace the EMM stuff with first as this will lead you in the right direction, for now just listen to the EMM direct.

Cheers George