This is just IMHO but after updating my DAC 2X to the new version 2 I feel it is a significant upgrade although expensive. My observations are better vocals both male and female. There also seems to be
be more weight to the music and improved but subtle detail. I posted this as an insight for other DAC 2x
owners who maybe considering this upgrade.

Ag insider logo xs@2xtomr1
I own 2 CD transports and thousands of CDs so always interested in redbook sound quality from any DAC.
I really wish I could give you an opinion on your questions. But I
have no experience with Uptone audio. I also don't know if the EMM
labs  new galvanic isolation is the reason for the improved sound,all
I know is the upgrade has made a substantial improvement in sound

I understand it has been a few years since this thread. I just stumbled across it when researching what is the latest firmware upgrade for this DAC. I also own the EMM Labs DAC2X V2 Dac. I sold my Playback Designs MPS-5 DAC to purchase the EMM Labs after listening to my friends EMM Labs DAC. He loaned it to me for about a week and I was able to do a comprehensive A/B comparison between the EMM Labs DAC2X (prior to the V2) and my PBD MPS-5. The PBD I had had for a few years and I still think it is a brilliant DAC but after having listened to many many DACs to compare to my MPS-5 the EMM Labs was the first DAC that I listened to for a lot longer before wanting or felt like i needed to swtich back to my MPS-5 and then become the only DAC where I found myself wanting to switch back too. Which to my ears meant there was something I found more appealing about the EMM Labs DAC over my PBD MPS-5 one. I also bought the EMM Labs TSDX Transport as the PBD MPS-5 unit had its own Transport.