Slotted in the gold lions tubes this evening. I must say this probably is the best i have heard this system sound from memory.
Deep bass, airy extended highs, big and deep soundstage, natural clear vocals, crisp with great transient norah track 13. Can hear clearly the light tapping of cymbals. Very musical with good pace.
I would think kt88s would be similar to primare i30 but this combi makes music so much more enjoyable esp if vocals and instruments.
The prologue 2 is a great value for money amp.