Would some one kindly explain why an impedance for input to an amp should be so high. I think of as the resistance to the voltage from the preamp making it extremely hard to drive the amp. If the preamp has a output impedance of 20 times that would that mean that the signal leaving the preamp has to be strong enough to to to overcome that impedament as well. Anyway I am clueless.
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.?