Originally Posted by Nyal Mellor
Educate yourself, this is an area full of BS and lack of agreement on what to measure and what effect it has. My power pages http://www.acousticfrontiers.com/Why...Grounding.html
are a good start, once you've read them check out the linked references for more. There definitely is an audible and visual effect from a well engineered product, but I do agree protect first, then worry about performance if funds allow.
I'll take issue with a general problem and a specfic problem.
Generally, I don't see anywhere that your site actually makes a case for direct audible improvements due to the use of any of these various band aids.
Specifically, I take exception with the following:
"All amplifiers, except Class A devices, draw current in response to the music waveform. 'Flat topping' restricts current delivery, leading to reduced dynamics, loss of articulation, bass extension and an anemic, uninvolving overall presentation."
All amplifiers have power supply capacitors that store power when needed and release it as needed to meet the needs of the amplifier. It is axiomatic that the current drain from the power source will not be constant or even necessarily sinusoidal over the power input and signal output cycle. If anything, flat topping and increased harmonic content increases the effective capacity of power transformers since they are primarily limited at frequencies below the line frequency and actually increases for low order harmonics.
Minor decreases in amplifier power output have few if any audible effects since few home audio amplifiers are actually run at or near to their limits.
I've tested power amplifiers with vastly reduced power line voltages and found that other than the expected loss of maximum output power, many remained linear at reduced but still useful power levels down to as little as 20% of rated power line voltage.