While I am a firm believer of running in, I do not believe that the sound gets 'better' as such, just settles in.
I've bought equiptment that I didn't particularly like the sound of out of the box, and not once has running in 'improved' the sound of that equiptment to the point that I liked it. On every occasion I ended up selling it on.
So rig up your amps and enjoy them. If you don't like them within the first hour, chances are you're never going to like them.
Impatience conquers all....connected the X300s properly to the speakers, and enjoying them! (Life's too short).
Sound great - definitely a step up from the X powers already. So, happy.
Main: Pioneer tv + LX85, Sony HW15 Proj, Cyrus DAC XP+/Mono X300/CDXTSE2/PSXRx2, B&W CM8/CM1/PV1D, CA BD751, Virgin TiVo, Inspire Rega t/t, Benz Glider MC, EAR 834P phono amp; Slee Novo Headphone Amp
Second: Panasonic 42" E6B LED, Pioneer VSX-D2011, Kef eggs, Virgin TiVo
Running in solid state electronics to make them sound better after many days is a load of......(fill in as appropriate)
I am sceptical speakers change much either, but can accept they do
The only burn with amps IMO is they 'may' sound subtley better after they have warmed up from cold, I do think I have noticed this at times, more so at night
I recommend leaving equipment in the box for at least six months so that it can mature properly.
What I find amusing is that everything always sounds better after 'burn in' (it's not burn in, this is incorrect terminology) never just different or worse, always better. Utter bo****ks !
I'm not sure this logic holds up....Mrs. Cno regularly puts me in my box, and I've barely matured at all!
"Everything has been said before, but since nobody listens we have to keep going back and beginning all over again." André Gide
Cyrus advise that their SS electronic equipemnt also "runs in". I've never noticed any change over time of any CDP or amp or DAC or anything that I've ownded. Speakers are a completely different experience however.
JRiver MC17 -> Cambridge Audio DACmagic+ -> Roksan Caspian M2 -> ProAc D18
I used to be a sceptic, to an extend still am, but unless you are a metallurgical engineer/expert or have designed every component in your hifi from the ground up can you say for certain that certain changes do not occur when 'running-in' electronics components or even cables?
These may be very small, perhaps not detectable in blind test but again, who can proof or dismiss that these possible small changes, accumulated over time with the addition and complexities of other equipment will not make some audible difference?
There are so many variables when it comes to this sort of thing, perhaps having an open mind is better than jumping on to either gravy train.
Happy Sunday everybody
Pretty ... and pretty proud of it
Actually Drummerman, I'm with you on this. I'm a bit sceptical about extensive running-in for electronic gear but I have to admit that there could be something in it.
As some before have said, speakers are a different proposition altogether, although I've found large differences in time needed. For example, I found that the Spendor SA 1 took maybe 2 weeks to sound its best while the Spendor SP 1/2R I currently use sounded great from day one.
I'd like to perhaps add that I personally have not experienced the amazing transformations some people have quoted when using new products over the first few days or even weeks. - Our memories, as stated in a previous thread of mine, are notoriously unreliable and influenced by a variety of factors. Because of this it is unlikely we remember exactly what something sounded like even a relatively short time ago. We recall the recalls. To further complicate things, our moods and health are also a factor on how we perceive things.
Thats not to say changes dont take place but if they do they are likely small and nowhere near as significant as switching in a new component, whatever that may be or even (especially?) moving speakers around/changing seating position.
Something as simple as listening to music when you feel relaxed and at ease with yourself and the world probably makes a bigger difference.
I've bought a usb -> optical digital converter about a month ago, and it sounded very bright right out of the box. Brighter than when my dacmagic did the usb to optical conversion. Very strange, since all that device had to do was change it from one digital connection to another.
Left it playing a day or two and it settled in nicely. No more brightness or sharp edges to high notes or sibilance to women's voices. And yes, I had the dacmagic and the converter connected at the same time and switching between them took about half a second.
I don't know why there's a difference, but there is.It might have something to do that all electronic parts need a current/signal for some time before they achieve their optimal characteristics. And the lower the current that passes through, the longer it takes to run in.
For speakers, it's easy to check. Measure the Thiele/Small parameters before use and again after about 50hrs, and you'll measure a difference.
For electronic components, it's a bit more difficult, because all specs are given 5-10% tolerance.
More rubbish spoken here than a Tory speech on the economy.
I would suggest what hifi numptys call burn in is actually your brain getting used to the sound.
I seem to have stirred a wasp's nest on this.
I agree that it is really difficult (impossible?) to compare a sound you hear today, with one that you heard 1/5/50/100/300 hours before. Just like any memory process, what you remember can change over time, especially if constantly stimulated in a very subtly changing way (or not)?
That's why I asked the question, as I really wanted to do an A/B test of the two sets of power amps. Is the upgrade really worth (for me) approx £2,500 ??
Anyway, academic now, as I changed them straightaway and I hear a nice difference - the sound seems more forward and wider, the different layers and instruments are more defined in a nice way.
Has this issue been covered by WHFSV in a Big Question at some point? Or informally even after a few beers at WHF manor on a slow Friday afternoon?)
How can a brain adapt to sound when you don't listen to it for a few days while the signal is flowing?
Perhaps it is the individual, may be some people are more perceptive than others or worry about these changes more? I know I can hear a change in my system over 12 hours from day to day, it cant be the hifi component, nothing that new, therefore, probably the mains supply, how about air presure, bing British, we love to atribut things to the weather?
There are dagers drawn over cables, running in? I'm sceptical but different sounds, I know cables sound different and not the more expensive the better either.
The whole thing is subjective, mechanical needs running in, electrical, I doubt it? . . . but give it all a few hours, just in case, then enjoy.
Rega P5/PB700 (upgraded main bearing, white drive belt), Sumiko Celebration Pearwood Signature cartridge, Carver MCt, Croft Integrated Valve hybrid amp, PMC LB1's on Foundation Designer Stands, Rega Apollo CDp. Cables: speaker, Linn K20, Interconnect, Foundation Audio Special.
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