Anyone upgrade to the Merason Dac1 mkii?

I have added a passive preamp to the chain and it was a metamorphosis. I like very much the DAC1 now. And the MSB discrete sounds over detailed and too brilliant, fatiguing to me. The magic of changing pieces in the chain. 
I just wonder if I actually own the DAC1 mk1 or mk2. The dealer swears to have sold me a mk1, however it has the full aluminium look vs the glossy faceplate and metal chassis of what I have always seen. 
 

@ricco275  Maybe you can call or email Merason with the serial number to get the ID sorted out

@facten yes that’s what I intend to do. Maybe it’s an mk1 and they were already releasing new chassis. 

@ricco275 @facten 

Yes, that would be the fastest way to make sure.  @ricco275 Thanks for sharing the update of the changes with the new preamp.  Your findings are concordant with what I have observed over the last couple of years, especially since we started carrying some of the very high end DACs.  The perceived differences between DACs are very dependent how resolving your system is as well as how dialed in your system is from a proper set up.  The more resolving your system is, the easier it is to hear the differences and the improvements.  If your system is set up properly, it is easier to hear the improved imaging and spatial information that a better DAC can provide.  Component synergy also plays a role.  That's why we feel the best way to know is audition the gear in your own home and in your own system.

@choiceaudio @zlone - I worked with Choice Audio to upgrade the Merason Dac1 from Mki to the new Mkii version. Just got it back in the mail and put it back into my system. It's definitely a worthy upgrade. I've not had much time with it yet, but I'd say I hear improvement in tone, detail and overall musicality. 

@choiceaudio - Thanks for your help!!! I appreciate your professionalism.