And after such a long time you are still able to make an A/B comparison ? I wish I could be so gifted...
It is not difficult...
I'll elaborate this a bit. I have been working on getting a realistic sound for nearly 30 years now, i'm not old either! (just over 40). My hearing is good, my perception of subtle changes i would say is good, ie, i am sensitive to subtleties. I don't listen for differences, although they may be heard, i gauge any sonic changes by emotional connection with the music, am i easily distracted by something else or am i drawn into a piece, song, whatever? The bass may be tighter, top end smoother, vocals more prominent, etc etc, but that's does not equate to the what music IS, the emotional connection is what music is about, and that is my endeavour, and believe me, i'm no fanboy of anything, but they work. If they didn't, i'd take them out and put the AD 843 back.
Some may quibble at the cost, mine cost me £50, for what they did this is simply insignificant considering the cost of an ASR, even though it itself is a bargain against the competition. (UK £14,500)
I'll elaborate this a bit. I have been working on getting a realistic sound for nearly 30 years now, i'm not old either! (just over 40). My hearing is good, my perception of subtle changes i would say is good, ie, i am sensitive to subtleties. I don't listen for differences, although they may be heard, i gauge any sonic changes by emotional connection with the music, am i easily distracted by something else or am i drawn into a piece, song, whatever? The bass may be tighter, top end smoother, vocals more prominent, etc etc, but that's does not equate to the what music IS, the emotional connection is what music is about, and that is my endeavour, and believe me, i'm no fanboy of anything, but they work. If they didn't, i'd take them out and put the AD 843 back.
Some may quibble at the cost, mine cost me £50, for what they did this is simply insignificant considering the cost of an ASR, even though it itself is a bargain against the competition. (UK £14,500)
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PaulS, emotional connection has nothing to do with what something sounds like, can you connect emotionally to Dr Dre's music on the bargain ASR? I can much easier emotionally connect with my dog howling at the moon.
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Maybe the electron flow eases up and becomes less constricted because after 100 hrs the atom surfaces have been smoothed out by the friction which accounts for the open airy sound. What a load of hogwash, you agree?
Maybe the electron flow eases up and becomes less constricted because after 100 hrs the atom surfaces have been smoothed out by the friction which accounts for the open airy sound. What a load of hogwash, you agree?
Finally! Some like minded posters!
Do you not think 100hours you might of forgotten what it sound like? I struggled for the 2mins between the two samples!
Nico, your scepticism is very common, it does not surprise me or bother me at all. Your profile states you have worked in audio for many years, and yet you have not figured out why components change over time. Again this is a common phenomenon that scientific minds hear things differently.
I don't know Dr dre either, is he good? Not sure I'd prefer my dog howling though, but I'll check him out, many thanks!
I don't know Dr dre either, is he good? Not sure I'd prefer my dog howling though, but I'll check him out, many thanks!
Did you know medical and military equipment has to be "run in" for 100 hours before it keeps people alive...
But that is not to make it heal or kill people better .... Or, in a way, I suppose it is 🙂
This confusion between "burn-in" or accelerated life testing to reduce / eliminate
early life failures before the equipment gets to a customer and "I can't stand listening to it until it has been propagating an A/C signal for n hours" is amusing - and irritating as we seem to be stuck with it now as an axiom.
If you use Foobar's ABX function, you can get nearly instantaneous switching. Unfortunately, the files are not well synched nor are they well level-matched. With a bit of editing software, you can fix that.
sometimes audio is like relegion , you hear what you want to hear.
in my case one of my amps arcam delta 290P has more than 10 opamps , which ones should i replace with discret ?
in my case one of my amps arcam delta 290P has more than 10 opamps , which ones should i replace with discret ?
Is the "100 hrs burn-in" required for the discrete op-amp to burn in or for the flux in the solder to disipate ?
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Possible. The modules look like they were cleaned pretty thoroughly, so it's a question of the attention to detail of the installer.
SY,
I can't tell when you are serious.
When I tried them I used two CD players, no difference before, a slight difference after. Enough that even switching them everyone here could identify the modded unit.
Yes the measured distortion of the Burson module was higher than the parts it replaced, but it's performance in an electrically "noisy" location was a possible reason for the nicer final sound quality. Then again it could be I prefer the distortion profile.
I can't tell when you are serious.
When I tried them I used two CD players, no difference before, a slight difference after. Enough that even switching them everyone here could identify the modded unit.
Yes the measured distortion of the Burson module was higher than the parts it replaced, but it's performance in an electrically "noisy" location was a possible reason for the nicer final sound quality. Then again it could be I prefer the distortion profile.
Simon7000, I think you conclusion is the most accurate: "Then again it could be I prefer the distortion profile"
I have always maintained that there are only different sounding well designed equipment, there are no better equipment.
I ask you: How are you?" and you answer "feeling great" and I ask: "Compared to what?"
Burn-in is a process that we used in military and medical manufactured equipment to find infant mortalities. Temperature cycling or ageing is to find MTBF.
Besides, I have learned in electronics 101 about 40 years ago that the whole purpose of negative feedback is to counter the effects of component ageing, in other words NFB would make your amplifier sound the same from the first moment it is turned on until it one day gives up the ghost.
I have always maintained that there are only different sounding well designed equipment, there are no better equipment.
I ask you: How are you?" and you answer "feeling great" and I ask: "Compared to what?"
Burn-in is a process that we used in military and medical manufactured equipment to find infant mortalities. Temperature cycling or ageing is to find MTBF.
Besides, I have learned in electronics 101 about 40 years ago that the whole purpose of negative feedback is to counter the effects of component ageing, in other words NFB would make your amplifier sound the same from the first moment it is turned on until it one day gives up the ghost.
Actually there is moisture in many of the components that decreases as it burns in. This change is of course reduced by feedback but is not eliminated.
The modern large scale (Think arena & bigger) sound systems would not be possible with vacuum tube era amplifiers even with the feedback they used. Even the volume controls of that era were not stable enough long term to hold their adjustments. Of course tube aging and the effect of the high temperature value shift on capacitors (particularly cathode bypasses) also caused drift.
Modern systems require amplifier gain to be stable within .25 db or better!
The modern large scale (Think arena & bigger) sound systems would not be possible with vacuum tube era amplifiers even with the feedback they used. Even the volume controls of that era were not stable enough long term to hold their adjustments. Of course tube aging and the effect of the high temperature value shift on capacitors (particularly cathode bypasses) also caused drift.
Modern systems require amplifier gain to be stable within .25 db or better!
How does one improve the sound of a component by replacing the op amp(s) with a discrete circuit(s) or any other preferred method while listening to music recorded through hundreds of op amps?
Can recordings be disopamped?
Can recordings be disopamped?
ATTENTION HERE !
I OPENED THIS THREAD . STOP. I USED 2 IDENTICAL AMPLIFIERS. STOP. SWITCHING FROM ONE TO ANOTHER (WITHOUT BURN IN - I DON'T REALLY BELIEVE IT 100%) SHOWS ME THAT THERE WAS A HUGE SONIC IMPROVEMENT. STOP. DO YOU PEOPLE HAVE ANY IDEA WHAT YOU ARE TALKING ABOUT ??? STOP. DO YOU HAVE ANY EXPERIENCE HERE WITH YOUR EQUIPMENT IN ONE OF WHICH YOU HAVE INSTALLED A BURSON INSIDE ?? STOP. THEN PLEASE REMOVE YOUR COMMENTS REGARDING GURU MAMBO JUMBO SCIENCE & AT LEAST GIVE THEM A TRY. STOP. THEN POST HERE YOUR COMMENTS. STOP . OTHERWISE - STOP - STOP -STOP ARGUING LIKE THOSE POLITICIANS DOOO....STOPPPPP !!!
I OPENED THIS THREAD . STOP. I USED 2 IDENTICAL AMPLIFIERS. STOP. SWITCHING FROM ONE TO ANOTHER (WITHOUT BURN IN - I DON'T REALLY BELIEVE IT 100%) SHOWS ME THAT THERE WAS A HUGE SONIC IMPROVEMENT. STOP. DO YOU PEOPLE HAVE ANY IDEA WHAT YOU ARE TALKING ABOUT ??? STOP. DO YOU HAVE ANY EXPERIENCE HERE WITH YOUR EQUIPMENT IN ONE OF WHICH YOU HAVE INSTALLED A BURSON INSIDE ?? STOP. THEN PLEASE REMOVE YOUR COMMENTS REGARDING GURU MAMBO JUMBO SCIENCE & AT LEAST GIVE THEM A TRY. STOP. THEN POST HERE YOUR COMMENTS. STOP . OTHERWISE - STOP - STOP -STOP ARGUING LIKE THOSE POLITICIANS DOOO....STOPPPPP !!!
Please refrain from using capitals!
It is considered very rude - as it is the forum form of shouting.
Your post has been reported
.
It is considered very rude - as it is the forum form of shouting.
Your post has been reported
.
It is obvious that you have no experience with these opamps. So why are you in this thread anyway ???
If it ain't broke, break it !! Then fix it again & use a Burson (if you have) just to check. It's called DIY !
If it ain't broke, break it !! Then fix it again & use a Burson (if you have) just to check. It's called DIY !
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