Away for most of this week now but, yes, on my return I want someone else to hear this. Mrs. H. can’t as get low level hearing is going.
I don’t think (or at least I hope) it’s not a big thing but, like the very low speaker hum, it feels like a thing to be understood and solved.
Overall few complaints. Amp is otherwise fantastic. Later this week I shall also start spending on a full set of backup valves.
You mean ask someone else to take a look?
Are your speakers cables touching a power cable? One week ago I had noise in one speaker, after changing home and installing again.
The speakers cables were touching one power cable.
I placed them far away from power cords and now all is dead silent.
Nope. Since I located the Hutter exactly where we wanted unit the cables are not perfect but not far off.
I am sorry for being late to the part. Are all the power leads fed from the on distribution power board?
Warm regards,
Mitch.
I can’t think of any mechanism that would allow that to happen. If you’re absolutely sure it’s from the DAC body itself, then I suggest contacting Chord and see if they can shed any light. Bizarre in the extreme!
Apologies for the delayed response. Not quite sure what the question means.
Me neither. Insane week but now back home and will see what happens when I power down tonight. And yes, if I remain convinced it’s the DAC I’ll ask Chord the question. Their customer service will be fed up with me though. First TT2 went bonkers and required a new main board, largely because the design means there aren’t many other options to fix stuff. It then went back a second time but they couldn’t find any issue. Nevertheless changed the main board again which was kind of them.
Emailing them to say it’s now whispering at me is likely to go down really well with Ed 
G’day Mike,
Are all the IEC power leads to the NAIM boxes fed from the one 240V (AUS) source? I use quality Belken power distribution boards with eight outlets, which are fed from one 240V power point on the wall. Does this make sense?
Warm regards,
Mitch.
No, there’s no Naim left in my system.
The streamer and amp are fed by a Musicline Powerigel which goes into an unswitched MK socket whilst the DAC goes into its own switched socket next to the MK.
The two MK sockets may share the same earth and neutral conductors, though they may not. Is there a way of plugging in the DAC into the Musicline Powergel?
Warm regards,
Mitch in Oz.
No, sadly there is not.
Sadly this could be your problem with an earth loop. When I was a young electrical apprentice our I.T. computer section had me scrape all the paint off from the inside of the metal junction boxes for a better earth connection. I noticed the oscilloscope the engineers were using to measure the noise on the earth conductor was plugged into a power point in the computer room. When I plugged the CRO into a power point adjacent to the industrial switched board, all the noise went away.
Having two power points next to each other does not mean they have the same earth connection or wire. Try purchasing a new power board so that you can connect the Streamer, Amp and DAC to the same power board. My Belkin, as mentioned before, has eight sockets to plug in components, which are fed from one Oz power point (MK socket in your example).
Warm regards,
Mitch in Oz.
Duly noted.
Just thinking this through.
At the moment I’ve…
So, three sockets and one unused.
What happens if I move the DAC onto the other unswitched MK?
Dear Mike,
As an experiment I would plug the DAC into the unused, unswitched MK socket as you have stated. I think they would use the same common earth wire in the one cable supply.
As the switched MK would most likely be on a complete separate cable run. Yes they would both earthed at the main earth bar at the switchboard (fuse box or whatever they care called in your country) though they are different earth paths with the potential for ground loops.
A further edit. There could be a loose earth connection with the switched MK generating a voltage drop and creating an earth loop. Ideally all IEC power leads should be fed from the same power source or MK. I have all my IEC power leads *please see my profile) fed from the on Belkin eight outlet power board fed from the one power point (MK). I do however have the LINN LP12 fed from a separte power board (THOR) which is plugged into the Belkin eight way power outlet board. One common earth path.
I tried to supply picks though the products I use have changed from the originals I currently use.
Warm regards,
Mitch in Oz.
Yes, moving the DAC to the unused unswitched MK makes sense as a next step.
Just to clarify, the switched socket is not an MK. It’s a standard cheap socket, which came with the house.
My recall is that the double unswitched MK sockets were added by a friend and most likely will have been fed from the switched socket rather than separately. For this reason I suspect such a move won’t solve the issue but there’s only one way to find out.
Dear Mike,
If this is the case I agree. It most likely will have no effect. I am looking forward to your next post.
Warm regards,
Mitch.
FWIW I think you ought to try something like an AudioQuest Niagara 3000 . I’m curious do you have any video gear near the audio gear?
If it was me I’d have all my audio into a AQ unit and have video in the powerigel
Nothing near at all. The Sky Q box and DVD player are a good 6 or more feet away at the far end of the fireplace. TV audio goes into the amp via a cheap analogue cable direct from the TV rather than the Q as I could never get audio and video to sync via the Q.
If I were to make a change then it would be to a much better analogue cable.
It wouldn’t be to optical to the DAC as that would require digging out the wall again. That can wait until we need a new TV. It certainly wouldn’t be via something as expensive or large as the AQ box. This is an exercise in system simplification so much as I’m sure there’s plenty of encouragement out there for switches, filters, large mains distribution boxes, reclockers etc. I am simply not going there.
Happy to entertain something which could take the streamer, amp and DAC on one block but it would need to be sensible priced and small.