@luca.pelliccioli This little world of ours needs more people like you! Peace, my friend!
Luca is international. Warranty is slightly different for Int folks.
That makes perfect sense. Thanks for the clarification.
you mean heās an International Man Of Mystery?
Great news! Once replaced the bad board the noise disappeared and now Iām falling deep into magic! Iām so happy and totally captured from sound, something so smooth, relaxed, natural, alive and present as the singers and instruments really were in my room. First thoughts about my brand new BHK Preamp and M1200s along with PST and DSD DAC with Sunlight just installed. I would like to really thank Steve, Travis, @jamesh and @scottm @Paul and all the hifi Family of this forum to let me enjoy this wonderful journey. Life is wonderful, every day we can smile, every evening we can share music with people we love. Itās all a question of simple little things, we only have to remember this and breath, now!
that is so great. enjoy enjoy enjoy. music truly helps us get through these challenging times
Luca,
Great you are up and running and you are enjoying beautiful music.
My preamp did have to go back to Boulder and hopefully will have it back in a week or two.
Scott and Mark at PS Audio have been fantastic to work with.
Not too much of a burden listening to Sunlight directly to the Amps for a short while.
Caio,
Gregory
Just swapped out the Tungsram PCC88ās in my BHK pre for the original stock 12AU7ās, which had very few hours on them. I tried to squeeze too many hours out of the Tungsrams, to say the least! I have one set of PCC88ās left but I think that I may just stay with the stock set for now after reading this discussion.
On another note, during the early months of the pandemic the anesthesiology and critical care community was in constant communication with our counterparts in Bergamo. What we heard terrified us but, with the knowledge gained from Bergamoās doctors experience we were able to adjust and mostly avoid the devastation that swept through your region. Plans to gear up for COVID were being put in place here before the events in Bergamo hit the news because of the insistence of Italian doctors. You were caught with almost no forehand knowledge of what the disease process was but as your doctors learned, the rest of us benefitted greatly. We owe your people a debt that canāt be repaid. The Italians were respected leaders in ventilator management already and were the first to identify that, although necessary in many cases, delaying conventional ventilator employment could improve survival. Being involved in the discussion allowed myself and others to develop plans for the U.S. that kept the worst from occurring in most areas of our country. Sadly for us, the pandemic struck in places like NYC and Detroit too soon to be fully prepared, if that was even possible. The āBergamo experienceā was historic in our part of the medical universe. Devastating, but life saving for much of the rest of the world. Your losses were not all in vain, my hatās off to you and your neighbors, sir.
Thank you Glenn. We all hoped science and governments would take advantage from our experience, moving speed in decisions or learning lessons in some way. The only reason why our losses would make sense was (is and will be) the chance to save people in other countries. The real respect for our dead friends and parents is now to unconditionally love life, to follow simple rules and most of all to remember that we have to help each other. Research for vaccine and new medicines (and the right to let them available) must be involve all of us. From Whuan to Bergamo, from Boulder to TelAviv or Paris or Nairobi. Will human being forget this soon?
Hi Jamesh
Iām in Adelaide South Australia and find Iām having a similar noise problem in the right-hand channel with my BHK Preamplifier , and with momentary drop-out of signal in the channel BUT it only seems to affect the IP that is assigned to my phono-stage. If I change the phono leads to another IP the noise follows.
If I switch to the IP that is connecting the DMP/DirectStream DAC the noise & signal drop-out go away???
Have you heard of this happening elsewhere?
I am using 7DJ8 tubes so is the 1st thing to do to swap back to the original tubes and see/hear if the issue resolved itself?
The fact it happens on one IP but not another is weird.
I look forward to your or anyoneās reply.
Cheers. Frank.
Swapped back to the original PS Audio 12Au7 valves, resetting the jumpers to original.
Result is the same so I guess itās off to Magenta for a check when they can fit it in.
Could the fact the pre-amp only exhibits the issue on the phono assigned input be something to do with it being a RCA connection and the DMP is XLR???
Hi Frank, did you check all cables from Phono to Preamp are tighten correctly? And form TT to Phono? And also ground cableā¦ I occasionally had same issue.
If plugging unplugging cables is not the solution I then would investigate more in Phono Preamp, if I understand well after switching input of BHK to DAC or what else, you stop hearing noise from right speaker, is it correct?
Also moving Phono Preamp far from TT and other components may change something.
Hi Luca,
Thank you for your response. I did also check the lead connections and the ground cables. All are good.
I also initially thought it was the phono-amp but as the noise always stays in the same speaker even when the interconnects are changed from L to R / R to L doesnāt that indicate that the issue is downstream of the of the phono-amp?
If you read all posts on this thread you can see how I had an issue with the one little board of the BHK behind the tube. Swapping left to right board the noise followed it. In my though the noise was always present with all input (XLR) 4 with vinyl, 1 with DAC and also 2 and 3 without sources connected. Input 4 with vinyl more audible because of this type of source.
It seems different in your case because you hear noise only with one input. Did you try to plug the Phone Preamp to another input of the BHK?
Hi Luca,
Yes, it was that thread and this one that alerted me to the fact that others had had symptoms that appear to be what Iām hearing.
I read the responses by Jamesh that said PS Audio encourages users to only use 12AU7 valves and that using 6/7DJ variants have been found by PS Audio to be a cause of these noises.
I also read your (and a couple of responses) that said the mini pc boards were candidates for the noise. I tried removing mine but they donāt want to move so Iām assuming that PS Audio has changed the design to keep them in place or at least not make it obvious how to remove. Iām not willing to ābrute forceā remove them. Iām waiting for the distributor to contact me.
Regards the pre-amp input - yes, I initially had the phono on IP1 , I changed that to IP4 and the result is the same.
I agree if the board is not easy to remove gently pulling it up, do not force and wait for the dealer.
In my case (I repeat: noise not dependent from input selection) this was the culprit:
I removed them without any force, with great attention to not bending the pins once I replaced them, at the end all came back to normal wonderful sound. Good luck!
Gone back to the phono-stage. Waiting on new tubes for that.
@magentaaudio (thank you Mike!) suggested I connect the DMP/DS combo to the IP I was using for the phono, using the same leads as I used for the phono and listen.
Result was no noises, no dropouts so we feel it must be the phono.
More checking to do.
Happy to hear, I supposed the issue was the Phono if other inputs were working well.
Curiously, I have had the phono preamplifier extensively tested whilst I have been overseas and no problems/component issues have been found. Next week Iāll put the system back together and see what happens.
Glad to know you solved the issue. Enjoy!