Denon DL-103 and Audio Note AN-S2 SUT problem

Hi all. 

So with high hopes of glorious vinyl sound I purchased the Audio Note M6 phono and the AN S-2 L SUT. The pair replaced my M3 Line and a Lehman Black cube phono stage head amp.
Well it didn't work. It sounds like my laptop speakers. No bass, very tinny and almost no gain. Not even listenable.
Is the AN S-2 SUT that poor a match for the Denon DL-103? I am pretty sure I have read that others have used this combination successfully. Even my local dealer said it would be a good match.

Is there a problem with the SUT maybe? 

I am quite disappointed to say the least.

Thanks for any help.