Hissing sound on Hydra 2

Both my Hydra 2 units are quiet. Looks like you have a problem with yours. Contact Shunyata, see what they say...

Very weird, the sound gone. Let me see will it come back again.

r u sure it was coming from hydra? could it be coming from your transport when the disc was spinning?

Hi,

This does happen occasionally during periods of high-levels of noise on the line. The barely-audible buzz you hear is the sound of the filter network as it deals with incoming noise. Once noise levels are back to normal or below, the filter ceases to make the noise. There is no inherent problem with this, rather it is a sign that the product is doing what it is intended for.

This slight buzzing is usually not apparent unless one puts their ear near the unit during its activity cycle. My unit does the same thing, occasionally.

Hope this helps.

Grant
Shunyata Research

Thanks Samuel, I think u are right. Its is not audible only if you listened very closely to the unit.

Its just come & gone occasionally.

By the way, can I check with u if u don't mind :
As what u said Shunyata do import the copper as solid ingots of CDA 101 certified copper. Does that meant that
treatment of the raw material ( copper ) is not done in Shunyata ?

Thanks.