Alrighty. An update after a few months… I got the SMSL DO200 MKII - it died within 4 hours after arriving. No idea why, it just stopped outputting sound entirely. I sent it back and out of frustration bought the RME ADI-2 DAC FS.
Now I am about 2 months into using it as a combo with the A90D - and I am very happy with this unit as a DAC/AMP pairing with the A90D. The DAC is quite good, but what really surprised me was the precision and very clean quality of the EQ options in the ADI-2.
- With the ADI-2, when using the EQ, the music loses nothing from it’s original presentation, it just accurately raises or lowers the variables, as you would expect from a very precise and more expensive EQ, it is definitely a professional/precision piece of equipment.
The bonus from this - I can hook up any headphones into the A90D, and then make a custom EQ setting for those headphones, so even cheap headphones still can be made to sound great with a little tweaking - then I can save those settings for each different set of headphones, and enable each saved setting for the various headphones anytime. The ADI-2 lets you save a massive amount of presets and name them anything you like and set those options for different outputs. It’s extremely useful.
Overall I am extremely happy with the RME ADI-2 DAC FS. With the large number of outputs and inputs, combined with all the other options it has, and finally paired with the A90D, it offers me everything I think I will ever need. I run these through my computer, satellite speakers, movie setup, etc. and it all works exceptionally well.
The only thing it lacks is bluetooth or wireless, but honestly I never use those anyway, I prefer wired connections to everything in my setup. Maybe someday i’ll need wireless, but if I ever do, I can always add a third device for that to easily update the setup when needed.
Short version - Extremely happy with the DAI-2 and the A90D. Would purchase again. No buyers remorse after 2 months, and I don’t expect any.
(Although this blows the doors off the 300 dollar price point from the original poster - Just felt I should drop an update to show where I ended up.)
- the one thing that people could take away from this, the RME ADI-2 DAC FS is a great unit, even as a dedicated DAC, or you could easily grab it as a combo DAC/AMP by itself and would likely be very happy.