Effect of power cord varies with amp

[Balisarda]

Hi all,

Last week I received my Corda HA-2 MkII SE amplifier from Jan Meier. After completeing its 150-hour burn-in, I listened to it for several days to get a feel for its character. Yesterday, I began A-B tests with my Berning micro-ZOTL.

With my Berning, I've been using Black Sand Cable's Violet Z1 power cord. I found it greatly improves soundstaging, especially depth. Using the Violet Z1with the Corda, however, I notice no difference at all in comparison to a plain black power cord. Why?

When I turn off the power switch on the Corda, the amp still plays for about five seconds. When I turn off the power switch on the Berning, the sound dies immediately. Is it possible that the Corda's power reserves (big caps?) make it immune to power problems that a high-quality power cord rectifies, whereas the Berning benefits from help with power, given its lack of power reserves?

I'd appreciate your thoughts.

Best,
Eric.

 

[jandl100]

Interesting comment - I have had the same kind of experience with my Krystal Kables Titan power cords. With a small valve amp and some higher power integrateds (the sound of which die in a couple of seconds of turn-off or) the improvement due to the cord is obvious - but is completely absent on friend's Pass Aleph 5, which has huge caps and takes a while to fade away. Could well be the same thing happening.