Originally Posted by headwhacker
Same experience here. My UHA-6SMKII is permanently stuck at the back of DX50. It gives DX50 more punch, weight and authority in the bass, clear detailed highs and smooth mids. Which opamp you got on yours?
I currently have ADA4627-1A and getting OPA627 and AD797 soon to see hove much different opamps affect the performance of this amp.
The CS4398 DAC in this amp though is not up to the level of the DAC inside the DX50.
I'm running stock in mine, 8610. I had originally intended to use it with my phone, so I wanted to have something that balanced sound quality with immunity from (or, at least, less than utter permeability to) cellular interference. I haven't heard any of the other opamps, but as I mentioned, I'm very pleased with the performance as it stands-- and I do still get some occasional interference from my tablet or one of my phones, so I'll probably be sticking with the 8610 for a while.
You know, earlier in the thread there were several people who said that the DAC in the 6S was actually much better from its non-USB inputs-- and considering that the DX50 outputs coax and the 6S accepts it, I'm planning on giving that a run at some point. (Truth be told, I had intended to try that out originally, but forgot to take the cable with me on my trip, so I just went LO > LI instead). I'm interested to see if it sounds as good that way as it does in the current configuration.