Pass amps + Power Cords ??

The stock cords sounded just fine to me in my original setup. When I moved my system, the stock cords were not long enough for the new placement. I purchased longer power cords from Signal Cable and they sound great.

On my Pass X150.5 and my friend's X250.5, here's our experience on powercords and also power conditioners:

The Shunyata power cords made a significant improvement on our Pass amps. Starting with the Copperhead, we went to the Taipan Helix Alpha, then Python Helix Alpha. Good improvement on each step and best with the Python.

But, plugging the amps into Shunyata Hydra power conditioners also made BIG improvements. We've used the Hyra 2, 6 and 8.

For those who say plug the amp into the wall, not a power conditioner, that doesn't hold, imo, with the Shunyata Hydras, which are not in any way power limiting, and the sound is much improved in many areas, detail, transparency etc.

There is absolutely no question on the above improvement.

I've tried some upscale power cords on my XA30.5 and XA100.5's that actually hurt the sound. Couldn't imagine why a 12 ga cord with heavy duty connectors would be worse than the black 14 ga molded Volex I was using but it was. Came to apprieciate the Volex, maybe one of the best $7 cords ever.

I found the perfect product for me, an Audio Art Power 1.
>Less than 250 for 2 meters
>12 ga shielded
>Gold over copper Furutech connectors (I don't get along with nickel)
>Good looking
>Great customer service

It made a small improvement, but I like a well made product.

I use all JPS Labs Aluminata on my Pass Labs XA-100.5 amps. Best I've ever heard on them!

I found that the 3 homebrews I've been using all have different sonic characteristics. They are certainly good power cords using the best Oyaide and Furutech connectors, Acrolink cable as well as cryo'd VH-Audio flavor 4 and the NEI3001.

I still few like somethings missing and I like starting with the PC before turning interconnects and preamp tubes.

Not having the ability to plunk down huge sums of money on multiple power cords, I'm hopeful just get close on a neutral cable which gets the most out of my X350.5. I certainly don't want to feel like I'm bottlenecking any potential this amp has.

Thanks for the good suggestions in this thread!