Speaker Hum

[hoopsontoast]

OK, this is odd. When I previously tested the Cambridge Audio A5 with the MiniDSP in the middle I got horrible noise:

Noise

I have been sourcing a small power amp for my Open Baffle project but having some issues with noise. Current setup is Sources > DIY RCA Switch Box > MiniDSP 2x4HD > Decware Zen > Speakers There is always a little hum but thats from the Decware, very low level and can only hear when you are right next to the speaker. In the past few weeks, I have tried two power amps, a Parasound Zamp and Nuforce STA120. The Parasound was damaged as there was a loud audible hum from the unit itsel…

Now trying it again:
Sony DVP-S9000ES > MiniDSP > CA A5 > Supravox

I get no noise at all, where as before I had the same issues.

Now I’m really confused!

Decware Zen, input connected and everything on in the house:

Decware zen, inputs and all connected at full volume. by Robert Seymour, on Flickr

And the A5

CA A5 with everything on-connected by Robert Seymour, on Flickr

I was suffering so much with noise before, I had stopped using the MiniDSP and boxed it up!

So I have a seperate issue with the Rega Elicit but not sure why I was having so many issues with the MiniDSP before similar to above and now its gone?