impedance matching amp/preamp


My amp is late 80's McIntosh 2250 solid state. My pre amp is a modified Ming Da... Impedance is way off, even though I think it has a very good sound. Amp input 50K the preamp outputs 100k which is totally backwards from all I read on the net. I have also used an AudioResearch preamp that was close in ohms, and my Onkyo AV receiver that also matches up with the amp. Neither sound as good as the Ming Da. My queston is how important is impedance matching and what am I missing.?
keslerd

Showing 1 response by keslerd

The spec sheet says Output Impedance 100K, Response Audio, the company that modified the unit, says Output Impedance 100K.. I do enjoy this preamp... but because the numbers are so far off... just had to ask... Thanks I will try to be happy.