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Laurie
Double Platinum Member
Canada
4854 Posts |
 Posted - 03/07/2009 : 18:30:37
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Bought new last week - stock was probably a couple of months old (S/N decoder is down so I can't check).
Looks like we have a new change to the DS-1 opamp.
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sp-1
Platinum Member
Germany
1454 Posts |
Posted - 03/07/2009 : 18:53:18
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| what does an opamp do exactly ? |
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Mesjoggah
Gold Member
Netherlands
595 Posts |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 03/07/2009 : 22:29:30
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| so another change in tone for the ds-1 |
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The_Doc
Gold Member
United Kingdom
509 Posts |
Posted - 03/07/2009 : 23:04:25
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I've got a similar question to sp-1 - why does the type of opamp make such a difference or, in idiot's terms (ie. for me!), why is it so important?
I've never understood this but then my knowledge of electronics only extends to knowing that there are a pair of -ve and +ve sticking in and out things on a battery - rubbish I know but I'm learning all the time 
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bossarea
Forum Admin
United Kingdom
3652 Posts |
Posted - 03/08/2009 : 01:25:23
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They're changing that chip so often now, I'm losing count.
They changed it 2006 to NJM2904 and now they've gone and changed it again. It's getting hard to keep track. |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 03/08/2009 : 02:05:53
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Funny enough, this type of opamp is what analogman uses in his mods (link with photos posted on the mods thread).
I have currently a NJM4558L in my DS-1 and I love how it sounds, very smooth. |
Edited by - cctsim on 03/08/2009 02:21:42 |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 03/09/2009 : 08:24:39
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quote:
Originally posted by cctsim
Funny enough, this type of opamp is what analogman uses in his mods (link with photos posted on the mods thread).
I have currently a NJM4558L in my DS-1 and I love how it sounds, very smooth.
Well, we assume that a new op amp in DS-1 automatically degrades its performance, this could be the reverse. I will test a new one and compare to the older op amps when I get a chance. |
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DarrinPA
Silver Member
USA
221 Posts |
Posted - 03/11/2009 : 00:45:26
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| I knew my new DS-1 from 2008 sounded different then my friend's DS-1 from 2003. In my opinion, mine sounds worse. I still need to get around to doing the Keeley mod for it. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/11/2009 : 02:15:33
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quote:
Originally posted by DarrinPA
I knew my new DS-1 from 2008 sounded different then my friend's DS-1 from 2003. In my opinion, mine sounds worse. I still need to get around to doing the Keeley mod for it.
The SEM makes a HUGE difference... |
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MERCYFULFATE
Copper Member
USA
45 Posts |
Posted - 03/13/2009 : 15:51:17
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| thats also called an inline op amp chip. Boss has been doing that for a while. Analog Man changes that out to a JRC4558 chip thats not inline. |
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Topic |
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New chip version of the DS-1
