Opinion on below 2 CD players ?

Would like to know how many versions does the Audio Aero Capitole CD player have ?

I saw quite a number of versions & was quite confuse, Mk1, Mk2, Mk2 SE & Reference ?

Are they SS or tube & what is the difference ?

Thanks.

Thanks a lot.

All the while, I thought its output is SS. My friend also not aware of it.