What was the first power cable that you noticed a difference in the sound?

@panzrwagn  right, I'm not saying it was apples to apples with the OP's question, but impressive a/b considering they likely weren't using zip-wire from Bestbuy  before the swap.

When my system was more basic (Parasound pushing B&W 6xx, or QSC ProAmps pushing Maggie 2.6, both pushed by a Marantz pre/pro and a Bryston pre/pro in swaps) I used Bluejeans cable (nearly 20 yrs ago I bought belden+carare setups from them) and off the shelf IEC power cables.  Amp swaps and pre/pro swaps made a difference. Cables... well, I tried swapping friends higher end cables vs. my bluejeans and I couldn't  hear a difference at the time.   Did I hear a difference moving to BJ vs. the translucent 16ga zip speaker wire and $2.00 RCAs, yup, but not between 2 "upgraded cables" since the rest of my system was what it was. 

I'm now running a BAK tube preamp and a Purifi powered amp (soon to be monoblock Purifi amps) pushing Tekton speakers and I can definitely hear the difference between 2  well regarded sub $1k DACs...  hmm, so things are getting more revealing.

Last month, I got a Puritan PSM156 and think my system sounds better with it, than without.  

As my system gets a lower noise floor, a larger SnR and more resolution, I "fear" I'll finally be able to hear differences in "real" cables... we'll see.  I run Mogami XLRs and speaker cables now... but a 'hifi brand's' black friday sale had me buy a few new ones to try, so holiday season listening should be fun.

@pureclarity  One of the other contributors to this thread has stated the exact opposite to your contention that front end equipment is where better PC's  make the biggest difference.   Got to love this forum for clarity and consensus, 🤣

Jacobsdad2000,

You've never heard of OCC single crystal where have you been? OCC single crystal was proven over 50 years ago to be the best wire for audio and the new rectangular stuff is even better than the round OCC check out Neotech rectangular wire.

Thank you everyone for your replies.

First how do you read post? do you read them to suit your desire to vent anger or to understand my point ?

--First i said that i approved carlsbad post and he explicitly does not deny the advantage of a power cord upgrade in SOME CASE not in all case , for the reason he explain well ...Then this approval suppose that i think the same4 as him about power cord efficiency ...

--Second, i explicitly said that my system value is 700 bucks then i cannot afford a costly power cord which value will even exceed my system cost and his resoldering it to my vintage Sansui ...

--Third i never denied the value of power cord in ALL my posts ...I only describe my situation and i am not alone in this situation with a low cost system and no need to buy a power cord ...Which does not means that i would not try one if it was possible without desoldering the one i have ...

Then i am not the one who pollute this thread as you claim ...Those who insult others are pollution ...

I am the one who said twice that carlsbad post was interesting and probably true for many amplifiers owner...

I never bash people without reading them first and their intention...

If i was wrong i always apologize...

i had move along already before answering your attack because i have said all that i want to say already ...

Are you a fanatic as those who deny any cord power advantage, but  contrary to them  one who vouch for a power cord in all case at all cost for everyone , preferably the cord that suit you ?

It seems so ...

I never attack people i gave arguments ...I gave my opinion ...

I dont appreciate to be treated as deaf or polluting a thread with NO ARGUMENTS except you felt the urge to say so...

@mahgister You very well maybe deaf. No one is saying you have to spend $2 to $4K, but there are improvements to be gad over the PC that comes with most equipment. Why do you have to pollute this thread with your rhetoric.