Impedance matching with tube amp


I have a Mccormack DNA 0.5 which has an input impedance of 100kohm. I'd like to get the Schiit Saga preamp, which has an output impedance of 180 ohms. Now, I've read about the 10:1-100:1 ratio of input:output impedance for power amps and preamps, so this wouldn't quite fit that range of ratios. Would this still be a good option, and if not, what other (<$500) tube preamp options do I have?

Thanks!
muffinhead123

Showing 2 responses by hansk46

hello Kalali ,
You are right  about the 600 Ohm , sorry fellow audiogonners  for the wrong figure I give . When I got the Sphinx poweramps I thought 600 Ohm to 600 Ohm  no problem , but ARC poweramps all have 100 k input imp to be sure about the lower registers .
I owned a ARC REF 3 pre amp , output imp 100 K , poweramp Sphinx PJ26 , input imp 600 Ohm , at the balanced input . I had a lack of the lower registers , finaly I bought two BAT VK1000 poweramps , marriage in heaven !