I've made 10+ attempts to contact Klaus to get a BOM or specific build-list. Calls, VMs, emails. I've heard nothing back. I'm sure requests like this are pretty annoying as they don't result in revenue.
So... I guess I cannot provide verification from Klaus (like we all crave) but, it should clear to anyone who has done research that this amp has many upgrades from the base-model Khartago.
Mind you, the Kismet-level Khartagos have beefier cabling to the inputs and different connect wire to the off-board capacitors. Mine is not a Kismet. Mine also has silver heatsinks instead of the black. Not sure I would call that a downgrade.? It would seem that this amp is between a Plus and an Extreme. Without a doubt, it would price-out above $1300 (new) and $700 is a great price for an incredible amp.
I don't know the exact age. 10 years ago, the serial numbers were in the 2000s. 3 years ago, the serial umbers were in the mid-5000s. Mine is 4420. I'll let you make your own guess.
Let me know if you have any questions.
have a good day!