Originally Posted by R Scott Ireland
To tell you the truth, I've never used either without external amps.
For the DX50's, I'm using the ALO Rx-Mk3-B+ and Meier Corda Stepdance (15V power source) with headphones and the Tralucent T1 with 1plus2 IEM's.
I use the DX100 as a digital source sometimes to the Bifrost Uber (soon to be replaced by something better - not sure yet what; probably Auralic Vega), which then feeds a Cavalli Liquid Glass. I also use the DAC in the DX100 to feed an ALO Pan Am. The DX100 DAC sounds really quite good.
i am pretty sure there is a cheaper solution for your setup......
I mean, the only reason I got the dx100 is because I want a system that is actually fitting my pocket (I live in Canada, so, yah, 2/3 of the time, I have jacket and big pocket!). If you want to just use the DAC of it, I think they are other cheaper and slimmer options out there.
In real life, you will not just listen to 24/192 classical or jazz or live all the time. The fact is, you will listen to some pop, rock, or something fun when you are on the road or doing exercise. Those music normally comes with mp3 format and will not give you any different sound between a $300 portable gear and a $1300 portable setup.
I have heard the RSA portable (forget about the model, but is it the most expensive one at the time that cost over $400 )long time ago with my TF10, and I can say it is not much better than the DX100 amp. Maybe the DAC is doing a lot of work, but I mean, as far as portable gear goes, it is not that hard to hit the performance wall. For what we have on the market right now, the desktop + full size gear is still noticeable better compare to portables.
Hence, you should save your money on the portable and just what is enough out of it, and invested it maybe more on the other things you like~~~~