streaming DACs around $4k

I'm in love with my PSA DS and Bridge II.  It's spooky good.

Also, Roon is like Leboski's rug: it really pulls the room together.

I had the Vault which I thought was good and just borrowed a PS Audio Perfect Wave with Bridge and I think it is awesome. Can anyone explain how the Direct Stream is different or better?

I upgraded the earlier Perfect Wave to the Direct Stream by replacing the internal circuit boards. My DAC still reads, “Perfect Wave Digital to Analog Converter.”  Internally it is a Direct Steam. Check out the PS Audio website for details. 

Call PS Audio’s technical department to discuss the differences. This conversion was too long ago for me to describe the differences. 

@https://forum.audiogon.com/users/lalitk

I also own a Bel Canto Black EX Controller/DAC. I, however, have not A/B them. 

Any updates to this?  I have two systems and trying to decide what to keep and if I should upgrade...

Systems:
1. Anthem STR integrated...Love it for simplicity but think DAC could be better.

2. PS Audio Stellar Gain Cell DAC w/ 2 M700 monoblocks..  AWESOME!  But some hiss/noise in the line..  

Thinking about upgrading to the Directstream Sr or Jr.  

Love to hear more updated opinions as this thread kinda died.