I just purchased a DS with Red Cloud installed. Does the DS require break-in and if so how long and is the improvement significant? Also, I hoped to replace my CH Precision C1 DAC with the DS, but will need to do careful listening comparisons. Does anyone have experience with the C1 and how the DS compares? Thanks
This ābreak-inā is an interesting subject. I definitely have experienced it so I ābelieveā in it. I found the DirectStream took about two weeks of heavy use to really settle in and be all it can be.
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I agree with Lonson. Give at an easy week of break in.
Thanksā¦ if anyone has experience with the C1 compared to the DS, would love to hear.
I think you will be the first.
The C1 is an impressive unit, occupying rarefied air. It will be fun to read your comparison.
This is the first component I have owned that I have noticed a big difference in sound quality after a week or so. But then it is also one of the few things I have purchased new.
I do have a question.
I have run the Directstream via coaxial from a CD player for 5 or 6 days and have noticed an improvement in sound quality. Would I have to do the same thing with the USB input or is break in downstream from the inputs?
Thanks
I donāt think so. I think the major ābreak inā is of the output stage.
The DS in my own experience does need some time before it burns in. Iām more with lonson than Paul on this one. Two weeks of continuous use is a minimum IMO. But you should see the rewards of the wait.
I must admit that I was disappointed at first with my DAC. Two weeks of heavy use later and youād have to kill me to get it away from me.
And having said that burn-in is definitely required, does anyone know physically why? I know this is a difficult question. I asked it of Paul and got no reply, so it must be tough but Iād really like to know. (The internet is full of conflicting gobledeegook)
Know? Some, not everything. When any device is manufactured there are likely oils, not quite used chemical reactants, etc. Those items arenāt as stable as the device itself and they slowly evaporate (or react with the air, etc.) Anyway since thereās a finite amount of these āextraā things we get the usual asymptotically ramping down of the āpollutantsā. If any of those items have any significant conductance they can be changing the value of a resistor, changing the parasitic resistance of a cap or inductorā¦ Also these processes typically happen faster with higher temperatures.
Some other things like dielectric absorption are essentially mechanical changes (rather than chemical) and also proceed at a rate that proportional to things like the electric field strength.
There are other things like a buildup of magnetic fields in magnetic materials that can plausibly cause some of the āburn-inā effects.
In the DS in particular I kept the temperature down almost everywhere so any of the heat related changes take a lot longer than most audio devices. (Especially the output transformers which are far from heat and relatively huge compared to anything else audio related.)
For some components the data sheets give charts for how certain parameters of the device stabilize over time - even things as simple as resistors, but much more commonly in things like electrolytic capsā¦
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I think the break-in time discussion for the DirectStream can be a little misleading. To read remarks here and elsewhere, youād think that without break-in, cotton in the ears would be necessary; and accordingly I had planning not to listen to it for at least two weeks while breaking it in. So I have to chime in here to say something that I didnāt expect to find, and that is that the DirectStream completely left the Sony HAPZ1ES in the dust right from the getgo, right from the first few bars (of music). Yes, BOTH noticeably more detailed AND astonishingly more musical.
When the PS Audio was first introduced, i was impressed with it, but let me say, my enthusiasm was tempered by the fact that it didnāt quite blow the Sony out of the water. I had kept reading that the firmware updates that continued had significantly changed its sonic characteristics, but I wasnāt expecting anything like this. Yeah, less than three days in, and man oh man, is this DAC a honey of piece. So, I just wish to point out that during the break-in, I plan to continue to enjoy listening to the DirectStream at every available opportunity. Ted Smith is a remarkable ā¦ genius.
By the way, my wife, who has demonstrated on many an occasion that she can hear, appreciates good audio equipment, even though she doesnāt appreciate how much one can spend in pursuit of playback that is detailed and yet musical, walked into the room and asked if it was the new PS Audio gear (the DirectStream) that I had playing back one of favorite female vocalists. I said, of course, and she replied:
āI wasnāt really expecting to hear a four thousand dollar difference, between the Sony and this (DirectStream), and I kind of hate to admit it but ā¦ I think I can hear a lot more there ā¦ there!ā Yeah, three days in, folks. Three days in, and even the wife is waxing rhapsodic.
So from my perspective I wouldnāt overdue the ābreak-inā theme. I have experienced it with other gear, donāt get me wrong. Tubes seem to not only go into stages of improvement but also suffer some regressive behavior, sounding worse after a short while, before coming back into their own. Headphones and speakers, but that seems logical enough. And I donāt doubt that the DirectStream will continued to āimproveā. But I have to say that this DirectStream on three days sounds a LOT more than just decent. It offers quite a leg up on what Iāve been listening to. Itās indisputable that itās on another level, both of musicality and resolution. Man, oh man! If I ever get to Boulder again, Iām going to have to bring you guys a good bottle of wine. Incredible job!
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Thanx @tedsmith. 300 to 500 break in time are too many for me.
With an average of 1 hour listening per day, with the new DAC III, another firmware might be out before Iāve reached the 300 hours break in lol.
I canāt understand while it takes 100 hours to break in a cartridge and up to 500 hours for electrical component.
Take an example : someone buy the SACD: 500 hours break in, the he buys the very much expexded new DAC, 500 hours more break in, considering that I expect it for the end of the year. That brings me to mid 2022. If Q2 2022, there is a new firmware for the SACD, thatāll be 300 hours, part of them being during the break in of the DAC so just add one month.
Silly, I want to upgrade a cable. Unless I find a reseller who has the Naim equipment to burn in cable (burn in is done by the reseller in 72 hours for free), thatās another two weeks.
Then comes a new firmware for the DAC. 3 to 6 more months.
When will me system be stable and at itās best ?
Reminds me of a great movie: āGroundhog Dayā 
If you donāt turn it off with the back panel switch itās sill burning in, it will take less time if you keep music (or a burn-in track) at itās inputs 24/7, no need to have the output connected or disconnected. If you are using a preamp just mute the DS when you donāt want to hear it.
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Great tip!
Thatās what I do to burn in cables : a burn-in-cd with repeat playing on a cheap CD player, cable connected between CD player and cheap amp (old not so bad accuphase), mute on and speakers off (for HDMI, Blu ray playing with TV off). Great tip chief 