Denon 103R load settings w/Moon LP5.3

The 470 is a very good load but 600 ohms is preferred in my system.

The closer you can get to 60 dB in my opinion the better you will be, so I would definitely try the 54dB setting with the balanced outs if that achieves a total of 60 dB from the phono stage. I used modifed 103R's for about 6-7 years and, in my system, 66 dB would have been too much gain. 

I would expect that the difference between 100 and 470 might be subtle with the 470 maybe exhibiting a bit more treble/high frequency energy. Again, try both and see what you prefer. 

I appreciate the response.

A couple of follow up questions:

- I’m using balanced XLR out that add 6 dB gain. Do you recommend the 54dB setting getting me to effective 60 dB? Or the 60 dB setting getting me to 66?

- In general, what are the trade offs between 100 and 470 ohm? Which should have higher resolution? Noise floor?

thanks again

Resistance: 100 ohms (you could also try 470-if you prefer that go with it.)
Capacitance: should be unimportant. I'd set it to 0

Gain: 60 dB