Flex wrote:
"Audioengr, have you done a control experiment where you take your amp and dac to a city environment with really dirty power, fluctuating voltage, and rfi. Does the power cord independence hold for these conditions?"
I recently lived in Portland, OR, where the voltage does fluctuate, but it is nearly always on the high side. This is where I did this testing.
RFI has nothing to do with power delivery. The impedances are too low. It has to do with ground-loops that form loop-antennas at the resonant frequency of the RF.
High-frequency spikes on the power can cause problems, but generally these are filtered-out by the transformer banswidth.
Folks attribute all types of noise to RF and HF noise on the power. The reality is that these are often due to ground-loops and other sources.
"Audioengr, have you done a control experiment where you take your amp and dac to a city environment with really dirty power, fluctuating voltage, and rfi. Does the power cord independence hold for these conditions?"
I recently lived in Portland, OR, where the voltage does fluctuate, but it is nearly always on the high side. This is where I did this testing.
RFI has nothing to do with power delivery. The impedances are too low. It has to do with ground-loops that form loop-antennas at the resonant frequency of the RF.
High-frequency spikes on the power can cause problems, but generally these are filtered-out by the transformer banswidth.
Folks attribute all types of noise to RF and HF noise on the power. The reality is that these are often due to ground-loops and other sources.