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The Opamp thread - Page 11

post #151 of 4402
7/17/09 at 6:38am
Quote:
Originally Posted by SpudHarris View Post
To your ears.
Yes, and if someone could prove the virtues of it in a controlled blinded radomized test I would be a believer again.

If applying class A to an opamp, go for CCS. The load of a resistor might just increase the distortion. What resistor value are you using?
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post #152 of 4402
7/17/09 at 7:52am
2.2k
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post #153 of 4402
7/17/09 at 1:35pm
oh come on! LT1357 now ?! <clicky, clicky> ok it's the single version of the 1358

I'm awaiting :
LT1355CN8
LT1028ACN8
LT1364CN8
LT1229CN8
LT1358IN8

I'm still dubious that the 49720NA can be beaten tbh, it just sounds too damn good!
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post #154 of 4402
7/17/09 at 1:48pm
there's a vague explanation of what the slew rate is here : What do you think about LT1357/1358 opamps?

I'd still like to try the LT1469 and LT1469-2, but I'm really doubtful that my soundcard has gain of 2 : "The LT1469-2 is a faster version of the LT1469 but has a minimum gain requirement of 2 for stability."
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post #155 of 4402
7/17/09 at 1:56pm
Is there a single version of OPA2111?
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post #156 of 4402
7/17/09 at 4:57pm
Thread Starter 
Yes, should be the OPA111
If I am thiking of the right chips.
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post #157 of 4402
7/17/09 at 6:01pm
Thread Starter 
I have 3 OPA211 modules I sodlered up the other night. They are great opamps.
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post #158 of 4402
7/17/09 at 6:02pm
Edit: NVM

On a side note: I got my TI samples today (would've been yesterday if I had been at home for the FedEx delivery. Waiting to test the THS4032CD and OPA2111KP whenever I can get enough quiet time.
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post #159 of 4402
7/17/09 at 7:44pm
Quote:
Originally Posted by pussycap View Post
I feel that Jim Williams was right in deeming the OPA211 and LT1357 the best audio opamps. And the LM/LME as a honorable 2nd choice.


BTW among the LME I like the LME49722 best -- coherent and smooth, and not too cold.


Oh and the OPA211 also makes a very good CMOY opamp... if it supports it (low Ib bipolar), it may give new life to your overlooked CMOY.
I'm feeling opampitis comin' on.

Quote:
Originally Posted by Cynips View Post
Edit: NVM

On a side note: I got my TI samples today (would've been yesterday if I had been at home for the FedEx delivery. Waiting to test the THS4032CD and OPA2111KP whenever I can get enough quiet time.
Looking forward to both impressions. I find my THS4032CD to be quite bright and much too overbearing for my Grados. I think the DT150 is fairly high ohms though, so I think the THS4032CD should be a good match. They will be installed in your Asus unit?
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post #160 of 4402
7/17/09 at 9:06pm
Quote:
Originally Posted by pussycap View Post
The OPA211 is incredible. Try and you won't go back.
I've got th 211 and I'm not blown away by any stretch of the imagination. I much prefer the 2111.
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post #161 of 4402
7/17/09 at 9:43pm
so Andreas is not god's word after all

after listening to the 49720NA very carefully, I don't really see what the fuss is all about.

if you can justify the US $75 a pop to go burson, they simply seem to be a no-brainer...otherwise for a couple of bucks the 49720NA will hit the spot. I read on a french forum that if the 5532 is 0%, then the 4562 is 70% and the burson 100%.

like these ppl having zillion pairs of headphones, why not just a very good one instead? like a HD800 or a R10? why collecting/paying for zillion op-amps when you can get a bunch of burson, and simply move on..

I'm highly doubtful that the LT1358/LT1364/LT1028ACN8 will make me forget about that magical sound the LME49720NA manages to output...but never say never I guess
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post #162 of 4402
7/18/09 at 3:15am
Quote:
Originally Posted by SpudHarris View Post
I've got th 211 and I'm not blown away by any stretch of the imagination. I much prefer the 2111.
If you haven't already, would you mind to explain what it is that you prefer about the OPA2111 over the OPA211?

No personal experience with the OPA2111, though I have the OPA827, OPA2107, LME49720, LM4562, LM6172, LT1358, LT1057, AD823, AD8599, TLE2072, in addition to the OPA2211A and OPA211, as well as a few others which I cannot recall at the moment.
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post #163 of 4402
7/18/09 at 4:52am
Haven't made a direct comparison between AD8599 and OPA2211A. Suppose I could have a listen. My earlier thoughts were that the AD8599 was pleasant sounding, with a nice roundness in the lows and a smooth midrange, though somewhat rolled off in the highs, and also very quiet from a noise perspective.
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post #164 of 4402
7/18/09 at 5:36am
Quote:
Originally Posted by LingLing1337 View Post
They will be installed in your Asus unit?
Yes, which actually begs the question whether I should post my impressions in the STX tweaking thread, this thread or maybe better in the STX tweaking thread and also a link to that post from here. Anyway, it will take a while since I'll be ordering adapters for my 49720HA's so I can switch back and forth more easily.
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post #165 of 4402
7/18/09 at 6:02am
Quote:
Originally Posted by 12Bass View Post
If you haven't already, would you mind to explain what it is that you prefer about the OPA2111 over the OPA211?
Am I missing something? What's this Gods Word thing about?

Anyhow, I don't dislike the 211. It's just that the 2111 seems perfectly balanced with my portable set up and whilst not a natural sounding chip it colours the main genre I listen to beautifully (Trance/Downtempo/Psy-dub/IDM etc....).
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