Boy am I confused :D
I thought building a passive preamp would be a walk in the park, but I am having some trouble grasping the concepts of impedance matching.
Here is the situation:
I wan't to run my Bottlehead Crack with the 100k attenuator at max, because I think it sounds better that way. It just seems much more dynamic? I think all tube amps sounds better at max???
Currently my Nano Patch+ passive preamp is attenuating -40db to -50db to control the volume.
I know I have to pick the right attenuator for my preamp to get the best possible match with my system => best SQ.
My DAC outputs 75ohm at 2,5RMS
The Bottlehead Crack's input impedance is 100kohm (http://bottlehead.com/crack-otl-headphone-amplifier-kit-specs/)
I need aproximately 45db attenuation. What ohm rating should the attenuator I pick for my preamp have?
Can anyone wrap their heads around this? I am at loss :(
Thanks in advance!
Edited by Rune3400 - 5/18/14 at 4:49pm