Anyone have experience with the Ayon Stealth dac?

The audio core of my system is a modified Oppo 203 (digital only) to a Directstream dac to ATC active floorstanders (SCM19A) and JL Audio e-110 subs. I've been mulling switching dacs, as I like the DS's natural warmth and a lot of what it does, but it does have a slightly digital sound to it that doesn't draw me in as much as I would like. From what I've read the Ayon Stealth (in preamp/dac mode) seems a very good candidate to consider. Unfortunately, the cost new is beyond my pocketbook and the used market in the States for Stealths isn't sufficient to take a chance cold, as I've sometimes done with other gear. So, I'm looking for the thoughts of those that have experience with the Stealth (all the better if there's experience with the DS too). What I'd like to hear about is something more delineated than "it's better" (or not), but a breakdown of what it is you like(d) and don't/didn't. Thanks, 
Used as a DAC/pre amp to Spirit III direct input is unbeatable! No chance to PS Áudio DIrectStream Sr.

I use the DS Sr. to listen to Bridge II streaming capabilities.
I use my stealth as a DAC connected to my pre.  I would never want to use the attenuation feature of the stealth, I’m to fussy with proper sound level control.  I tried a Linn Kontrol which is SS and was underwhelmed by the neutrality of the sq.  I am using an audio research LS-16 that was modded by the great northern sound company.  Very good combination, but I have settled on a tube buffer to add more richness.  My Aesthetix Calisto is in for repairs, but I will return to describe my impression of the stealth with my reference pre when the Callisto returns.