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

I don't understand your post. 

The M6 phono is a pre amp with a MM phono stage built in. Audio Note don't make an MC phono stage for their pre amps. That's why they have SUT's

The M3 pre amp doesn't have a phono stage. 

I have P4 Mono Blocks 

That's what I thought too. It should not sound this bad. AN don't publish the specs on these.
It shouldn't do any harm if I just plug right into the phono and see what the difference is. Any other trouble shooting tips. 

Thanks very much for your reply. I discussed it with my dealer who are Audio Note dealers. It would seem there is a problem somewhere. Like you said they confirmed that the combination is not the ideal one but it will sound quite good when working properly.
Connection is TT to SUT input
SUT output to M6 phono input.

M6 line inputs all work fine. 

Next I am going to try plugging the TT into the M6 phono to see if the sound is different albeit quieter.

Will post my finding later

So I plugged the TT straight into the Phono.... Same sound quality low gain. I then reconnected the SUT.. Same sound quality and low gain. 

SUT is used. 

Must be that the SUT has an issue.

I will get it checked out.

Thanks for all the advice folks.

Cheers

After closer reading of your suggestions it could also be the phono stage in the M6 as the sound did not change. 

Thanks

Dover... Have you actually heard the combination?

The so called... Plonkers.... have been selling, servicing AN and building  ANK personally, not just the dealership for decades. They are very well respected in the industry for their knowledge and integrity.

What you should have said was personally, you disagree with their opinion instead of calling them names.

The 103 and AN S-2  is not a perfect combination but it is an economical one to start with. The S-2 is a  good SUT that will allow me to upgrade MC's and reap the benefits when I choose. 

Update. I now have my SUT and M6  phono at the dealership and they are checking things out. I will post when I have them back.

Cheers

Update.... 

The M6 has a failed coupling capacitor. By Audio Note's own admission they have had problems with copper foil caps of these years and have now gone to a redesigned cap to avoid this.
I have recently purchased an M2 phono for a future 2nd system while the M6 is waiting on parts. The M2 has a similar phono stage to the M6..... It works very nicely with the Denon 103 MC and the AN S-2 SUT. So as several have suggested quite strongly the issue was that the Denon 103 and the AN S-2 would not work together... you were very wrong. I would suggest you base you comment on actual experience next time. Some even went so far as to say my trusted dealer had sold me down the river. The funny thing is, as mentioned in my posts, I didn't buy the M6 or the SUT from my dealer. Hmmm.. 
In addition. I have decided to replace all the old capacitors with the updated AN capacitors to avoid any possible future problems.

When the M6 arrives home I will update the thread for re confirmation.

Thanks for all the comments. 

Update... .

The M6 is back with new caps and it sounds glorious through the AN SUT 2 and Denon 103 mc.

Many thanks for all your replies.

Happy listening