What is the best power cord for pass labs xa100.5?

Syntax,
The irony is in most power cables if you remove the megabuck cable plugs and inlet and hardwire the cable into the equipment you can halve the cost and increase the sound quality. It cracks me up to see audiophiles buying jewellery type connectors, when if they simply bypassed them ...
Same with earthing, well implemented single earth path for the whole system can yield significant improvements in noise floor and transparency. Again it cracks me up to see megabuck systems compromised by having multiple power feeds and hence multiple grounding points that inevitably increase the likelihood of hum etc.
A little housekeeping goes a long way.

I think its a bit of both, I've heard power cables make bigger differences on some amps than others. If the power supply in the amp is properly designed then pc's should make less difference. Some of the top ss amps now have power factor correction built in as well. IME a lot of the boutique power cables are detrimental to sound due to poor design, they seem to be built by marketeers rather than engineers. This is really what audiophiles deserve though - look at some of the recent post/questions - power cables that will speed my power amp up, power cables that will give me more bottom end. The number of posters here looking for cables to fix a system issue is unbelievable.
The amp that reacted least to pc changes was my Rowland monos and some Airtight ATM3 monos.

I agree with increasing the contact area, the main issue I see on 15amp iec sockets is they are loose, even the audiophile types. I always replace these with either 20amp with their increased contact area and much tighter fit or hardwire straight into the equipment. The Tsunami in my system sounded very beautiful tonally, but the sound was very slow and slugged when trialled on both source and amps compared to the MIT I use.