The Opamp thread

[qusp]

Quote:

well, his adapters can't do 2 single DIP8 > dual DIP8 so the browndogs still remain my best option. Seriously, the traces to both opamps are not the same length on this one, this can't be good.
 
and I find it rather sarcastic to question my mental sanity when you're using cryo silver pins on your adapters..just sayin'

he has 2 x single soic8 to dual dip8, he also has a soic16 adapter for some rare intrumentation amps. why bother with dip8 anyway? most decent new chips arent even made in dip anymore
 
hey look I saw your silly looking bursons before you decided to change your mind yet again, I just happen to have an abundance of silver wire around here, its more available to me than anything else the right size and given the need to add pins to the adapters, I would much prefer to add high purity silver pins that solder in directly that cost me a matter of 20c in materials than those stupid overly bulky dip pin sets with 2 way pins made of brass or something. I think I have perfectly valid reasons for questioning your views; where the above is just a matter of quality and availability. I mentioned nothing about it changing the color of my music. what would be crazy would be spending more for crap pinheaders and postage when I have better quality (in every way) materials in my workshop that cost me less. 1 adapter might use about 2-3cm of wire.

 

[leeperry]

 

why bother with dip8 anyway?
[..] 
I saw your silly looking bursons before you decided to change your mind yet again

 
let's see...because the "AC" grade of LT1028 doesn't exist as SOIC8? The lower "C" grade sounds a lot worse in many ppl's opinion(including mine).
 
oh, silly looking...I guess you've never heard the Burson V2, duh

 
I can't use them in my current DAC because its linear regulated PSU isn't beefy enough...but I think I'll grab that Burson DAC down the road anyway.
 
I wish you good luck w/ your non-silly cryo silver pins then 

 

[ROBSCIX]

For proper information for the thread, the LT1028 is available in SOIC8...the LT1028ACN8 denotes a specific model which is Dip8.
Look for the LT1028CS8..that is a SOIC8 IC.
 
Check out the spec sheets they can help:
LT1028

 

[qusp]

I use soic8 LT1028 in my bipolar coffin minigold super regulator, seems you dont read datasheets. I have 6 burson V2 here and none of them in use. I seem to remember you saying they were coloured to hell and wouldnt go near them anymore. they are nice enough, but simply not stable enough for my purposes, I prefer not to have to adjust my opamps when conditions change, due to liking DC coupled designs
 
you really should read the datasheet, they provide all manner of useful info.......

 

[leeperry]

You've recently gained a place on my ignore list, so I unfortunately can't read your post in full...but LT1028AC -its higher and noticeably better sounding grade- only exists as N8 and not S8.
 
Maybe I'm not the one who can't read a datasheet after all

 

[qusp]

thats funny, somebody informed me that you have stuck your fingers in your ears, you only recently came off my ignore list after being there for quite some time. the huddler change reset all of those settings and you havent annoyed me enough to reinstate it till recently, since I havent really been here much since the change. it really was much more peaceful, so maybe i'll just reinstate that, I know you wont be able to resist taking a peak and I know that given your number of edits you only just came up with this reason just now. its laughable that you think you can hear the difference between the 2 grades, the typical performance specs are effectively identical unless you claim to be able to hear into the uV and nA range. and the thing is, you said the 1028 wasnt available in soic8, which makes me think that you only just now read the datasheet and found your way out. how can you have made an informed decision between one thing you didnt know existed and another you did?
 
see the thing is, what difference does it make, you dont listen to anyone anyway, the point at which you pulled out speaks volumes
 
and i think you'll find that the grades read down the page, with milspec at the bottom. A and C mean zero towards quality grading, it simply denotes the package type

 

[Sebhelyesfarku]

Ok, who's on whose ignore list? I got confused.

 

[SpudHarris]

No love lost betwenn them two haha.
 
That said, I've had dual soic LT1028 for ages and never really found a circuit where they shone. My Fi-Q which isn't as modded as Qusp's is astounding with AD797BRZ's. I did have the AD797ARZ's in there but there's a billion miles between the two and frankly I might as well have been listening with an LF353 in there so I went with the higher grade  

 .
 

 

[leeperry]

LT1028CS8 sound horrid compared to ACN8, I could DBT them from the other side of the street. I wonder why ppl w/ tin ears try rolling opamps tbh...cryo silver or not 

 

[dlaloum]

Quote:

LT1028CS8 sound horrid compared to ACN8, I could DBT them from the other side of the street. I wonder why ppl w/ tin ears try rolling opamps tbh...cryo silver or not 

It is the synergy it generates with the tin....

 

[SpudHarris]

Quote:

LT1028CS8 sound horrid compared to ACN8, I could DBT them from the other side of the street. I wonder why ppl w/ tin ears try rolling opamps tbh...cryo silver or not 

 
Of course you could 

  and don't let Dorothy hear you say that!!
 

 

 

[leeperry]

 

 
Of course you could 

  and don't let Dorothy hear you say that!!

I'm not from an english speaking country, I dunno anyone called Dorothy...is she your night nurse or something? And yes, the C/AC grade difference of LT1028 is well documented: http://www.head-fi.org/forums/f6/audio-gd-discrete-op-amps-reviewed-OPA-earth-OPA-moon-OPA-sun-v-2-a-397691/
 
C truly sounded horrid each time I tried it

 

[ROBSCIX]

Quote:

No love lost betwenn them two haha.
 
That said, I've had dual soic LT1028 for ages and never really found a circuit where they shone. My Fi-Q which isn't as modded as Qusp's is astounding with AD797BRZ's. I did have the AD797ARZ's in there but there's a billion miles between the two and frankly I might as well have been listening with an LF353 in there so I went with the higher grade  

 .
 

They are OK when used in certain designs.  The AD797's seem to have a following but they can be unstable in some situations also.
I am actually building some dual AD797BR's from some associates.  Nice adapters, Cardas Quad solder...they should be some nice modules.

 

[i_djoel2000]

greetings all..
 
i wanna try order some sample from texas instrument. but when i register and they require me to put office phone number, they keep saying the number is not valid eventhough that number ACTUALLY IS!!
 
 
anybody can help me with this matter? thanx in advance. oh, if this is matter..i live in Malaysia. thanx

 

[jageur272]

Quote:

 

I'm not from an english speaking country, I dunno anyone called Dorothy...is she your night nurse or something? And yes, the C/AC grade difference of LT1028 is well documented: http://www.head-fi.org/forums/f6/audio-gd-discrete-op-amps-reviewed-OPA-earth-OPA-moon-OPA-sun-v-2-a-397691/
 
C truly sounded horrid each time I tried it

 
Wait... That's well documented?  A single review that is entirely based on his opinion?  Gee...  DBT's are VERY rarely ever performed for audio; don't expect to do one properly at your residence.