Well, one of my audiophile friends uses his Kondo IO (Latest Generation) with the brand new Kondo KSL step up and he prefers this combination much more than without the KSL. His main Phono unit is the Boulder Phono. I think, taste may be different, but the latest KSL is really a good sounding one, or let>'s say, there is much worse out there ...
Btw. IO is normally in use with Kuzma Air Line.
Btw. IO is normally in use with Kuzma Air Line.