NAD M5 no sound from Digital Coax out SACD


i just hooked up my DAC to the digital out on my NAD M5. it plays regular CDs fine but when i try to play a SACD there is no output. i've been through all the menu functions but nothing works. i have a 2 channel system.
anyone? anyone??????
donrocket
SACD won't play through digital hook-up or DAC. Use a pair of analog interconnects from the M5 directly to an input on your pre.
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Thanks for the input. I learned something new.

Not sure how I'm going to hook things up now. I'm going from my PS Audio DAC to a NAD M3 integrated using the 1 balanced input on the M3.

So what do you think is the best scenario:

go from:
M5 to M3 via balanced for SACD
M5 to DAC to M3 via RCA for CD
or
M5 to M3 via RCA for SACD
M5 to DAC to M3 via balanced for CD

I don't have a quality RCA interconnect on hand to test out