I‘m inserting a passive stepped attenuator between my miniDSP Flex and my power amp after I experience a couple of nasty and potentially destructive volume surge/noise incidents recently that I described in another thread. I need help determining whether I need to buy a pair of low-capacitance cables.
The attenuator has an impedance of 10k ohms, so I think I should be fine on the source side (Flex output impedance is 200 ohms). However, my power amp has an input impedance of 28k ohms, only 2.8x higher, so what is the max capacitance for 1-meter RCA interconnects that’s acceptable to avoid audible frequency response changes?
The attenuator has an impedance of 10k ohms, so I think I should be fine on the source side (Flex output impedance is 200 ohms). However, my power amp has an input impedance of 28k ohms, only 2.8x higher, so what is the max capacitance for 1-meter RCA interconnects that’s acceptable to avoid audible frequency response changes?