I really wish all of us would try before you buy. I understand that there is not always a brick and mortar audio store near you but there are several places like The Cable co, Music Direct, and ESP power cords that will let you return the item within a time period. It is usually true that you should start upstream first. That being said. If a power cord made no difference over the stock (black test power cord) made no difference then something is wrong both with the amp and the system. I have done a ton of testing of power cords on several systems and specifically certain components. They all make a difference over the stock power cord. The question is was it good or bad according to you. I have tested several Pass amps in my system along with several other brands. The power cord always, and I mean always made a difference. From a basic AQ NRZ to high end Kubala Sosna, Nordost, ESP, and several others old and new. If it didn’t please tell us your complete system and the brand of the power cord so others won’t make this mistake or can disprove your findings. Also, As a side note. Did you break in the power cord. Some only need about a week or two and others need about a month. A great trick is to buy the c13 adapter to turn your power cord into an extension cord. Then use it as an extension cord for your old desktop computer, DVR, or your refrigerator which all use a lot of power. After a week or two you can finish off the final break in on your audio system.
New expensive power cord for amp and no change in sound?
I bought new an expensive(for me) well known and reviewed power cord for my very good amp and plugged it directly onto the wall socket. After a couple of weeks of daily use I hear no change in the sound quality from a $500 cord. I don’t want to name it for fear of getting my thread deleted. You would know it or at least be aware of the company. Did I throw away several thousand dollars? Before I get the snake oil answer I want to let you know that I bought an upgraded cord for my pre as suggested by the pre’s manufacturer and am pleased with the results.
I guess for full disclosure the amp’s manufacturer said don’t bother. But I had had good luck with the pre so I thought it would be a good idea.
Anybody else have this happen to them?