Bruce D, concur 200% w/you. Koda ahead of the Yps, itself ahead of the Dart. Yps gets the nod on transparency/delicacy, Koda on timing/color/texture.
For me, it's a small miracle I'm even entering Koda SQ territory w/my Nats. However it's taken a WHOLE Nat chain (linestage AND monos, not just the pre as w/the K10 demo), all new cables, a balanced trasformer, Entreq gounding, Lundahl transformers and Duelund caps in my Zus, ALL of this, for Nats to start to enter the territory of the lone K10 at demo a few years back.
THAT is an amzing testament to the true genius that is the Koda preamp.
A whole Koda chain, K15EX/K70's? Can music be TOO beautiful?
K10/K70's £70k, K15/K70's £90k. I hate to say vfm at these prices, but I'd bet they'd make AG Trios/Basshorns and Cessaro Liszts really sing.
Dave, very happy to host you. Now is a bad time, I have to fix one Nat mono after I tried to kill it, and I'm about to move to Norfolk. I'm likely to get my amp back, but maybe in mothballs as we commence restoring our new house. Let me PM you when I know what's happening.