I've not heard a K2 amp, but I have heard several Roksan components and they do seem to have a "house sound".
Energetic and dynamic with good clarity, but rather inyerface, unsubtle and unsophisticated. I didn't like them, there's much better gear for classical or acoustic in general imo, but entertaining on rock music etc.
I wouldn't go there, but I can understand why the brand has an enthusiastic following.
Thank you , I better give Roksan a miss in that case. Any recommendations on an amp and possibly matching cd player. I have about £500 to spend on an amp,something that sounds nice and plenty of drive for wharfdale linton heritage speakers?