Buzzing sound from power conditioner

jean-paul

diyAudio Moderator Emeritus
2002-09-20 7:20 am
Germany
62 euro is not bad. An isolation transformer ia a very good upgrade for audio sources. IMO it is an obstacle but when I take it out of the chain the result is less good. Using it makes more of a difference than using mains filters. I use both.
 
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Absolutely, years ago I used one for all digital-related sources (including my separate DAC), another one for analog (preamp, tuner). Power amp went (and goes) directly to mains, through a parallel line filter.

Now I'm going to further separate DAC from devices operating only at digital level (yes I still happen to have a CD spinner :D).

So, that's why three small trafos, way oversized for the VA declared requirements. Less load and hopefully less mutual interference.

And you can wire to have balanced mains feeding your unit.
 

jean-paul

diyAudio Moderator Emeritus
2002-09-20 7:20 am
Germany
Will try the Imed1000 this weekend. It hums slightly mechanically (as usual with 1000 kVA...) but apart from that it is a ready built medical device so everything is well designed. These are custom built in a larger 19" casing for a certain brand medical gear. What surprised me is the very loud humming of the 2000 version. That one is absolutely unusable for audio when placed in the same room.
 
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