Home Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

I did click the link!

It goes to a page on the Shunyata site noting commercial usage of their products.

And the other to a post by Ode Lund Christian.

As far as Ode Lund is concerned, the answer was shielding the power cord.
OK, the amp was radiating rectifier switching noise out through the power cord. That is not hard to understand at all.

The point is that I can buy a 14ga shielded IEC power cord for $20. Why spend any more?

As for my DIY amps I don't have that issue. The balanced power might have some bearing on that but I never specifically tested because I don't have a noise issue in the first place. On the class A tweeter amp which uses two 300w SMPS's, I did install a 20amp Pi filter on the AC line feed as I was concerned about rectifier noise reflected on the AC line. But in an SMPS the rectifier is directly across the AC line. In linear transformer supplies the transformer usually provides enough isolation. But there are exceptions such as Ode Lund found and the solution is simple and low cost.


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  • I did click the link! - gusser 07/19/2311:45:56 07/19/23 (0)

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