I know Klaus makes many iterations of his amps. Mine is a Kismet board + in a Khartago but looks like a Stratos. The manual does not have Kismet specs, but lists all the other amps >10k ohm input impedance.

Does anyone know if >10k ohms sounds right for my amp? And how much more ohms is it? 11k, 12k, etc?

Reason is I want to make a high pass filter to cut 80hz and below from my Magnepan 1.7i s. The equation to calculate for the capacitor requires the impedance.

My Rythmik servo sub feed from the 2nd pre amp out will handle the vey low freqs.

Thanks!