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Help in minimizing hiss

I’m wondering if all hiss can be removed, particularly with highly efficient speakers.
The hiss in my system is audible from about 4-5’ away when it’s silent in the house.

All gear is on a dedicated line I installed with new 12/3 romex to the panel with a 20 amp breaker.
I’m using all quality power cables and XLRs.

Rig:
Oppo 105 - Schitt Freya + - Legacy Wavelet DSP - Pass Labs X260.8 - Legacy Valor (101 dB sens)

Thanks for any input you may have,Scott
simpleman68
audition__audio
1,493 posts
 
Most likely the culprit is your Schiit Freya. Obviously your high efficiency speakers dont help this situation. If it is the Freya I doubt there is much you can do to remedy this situation. 
lowrider57's avatar
lowrider57
5,417 posts
 
If you suspect noise is coming from the Freya, change to passive mode which will remove any tube hiss.


simpleman68 OP
11 posts
 
Thanks for the input all; sarcastic and otherwise. lol
Oddly, I think the Wavelet may be as noisy as the Schitt.Switching to passive mode doesn't quiet things up very much.
Will play around with it more the next few days.
simpleman68 OP
11 posts
 
@mihorn  I have tried a few different types of power cords from stock to Pangea and now Nordost. I don't hear an audible difference in hiss.
The hiss got substantially quieter when I pulled the Panamax power conditioner out of the system.
three_easy_payments's avatar
three_easy_payments
2,097 posts
 
I typically associate hiss with tubes and agree with others that The Freya is a likely culprit.  Have any spare tubes to try?  And I don't get the sarcasm on wanting to remove hiss or any other unwanted noise to lower noise floor.  It seems silly to promote using wonderful cables while dismissing hiss as somehow not degrading to overall SQ.  I've been much happier when reducing all noise in my system to the extent practicable.
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