Recommendation for a OPAMP Replacement

[mlucitt]

Does anyone feel like recommending a replacement OPAMP for the venerable Texas Instruments TL072P? I'm thinking OP 275 or OPA 2604, maybe a LM6172.

Thoughts?

 

[laatsch55]

What used to be Burr- Brown op2134?? JRC-4580

 

[jbeckva]

LME49860's .. I couldn't stop listening tonight.

 

[mlucitt]

Lee, I had on my list a Burr Brown OPA 2132PA but I forgot what that one has for specs.

 

[jbeckva]

Have you heard the LME's, Mark? Give 'em a thought...

 

[laatsch55]

Paging Dr. Lucitt.......Jer speaks the truth.

 

[jbeckva]

My Xonar had 3 of them in sockets for easy swaps in and out. Two are for I/V conversion, the last being a buffer amp. The original buffer was stock with a LM4562, the two I/V's were JRC2114's. I can't find anything on the JRC2114's (anyone?). But swapping all three out with the LME's was definitely worth it.

Although I wonder... this here might be a good example of questionable diminishing returns...

http://bursonaudioblog.blogspot.com/2009/11/asus-xonar-stx-sound-card-upgraded-with.html

Defeats the whole RFI shielding and all that.. But hey, more power to 'im!

 

[laatsch55]

Must've been a real page.... he's gone.

 

[mlucitt]

I'm back, never far from my computer. I'm not sure about those discrete board subs for opamps, but I will look at the LME49860. Mouser has 433 of them for $3.50 Each. Same pin outs?

Thanks!

 

[jbeckva]

Yeah, those discrete boards were way overkill IMHO - looks like "malignant growths" on the side of the soundcard to me heheh.

Yep, same pinouts as for most 8 pin dual ic's.

 

[jbeckva]

Link for the LME's

http://www.national.com/pf/LM/LME49860.html#Overview

 

[mlucitt]

Sweet, thanks. I also looked at the LM4562NA from Mouser (same page) they have nearly the same specs for $3.05. Any thoughts on that one?
Here is the link:
http://www.ti.com/lit/ds/symlink/lm4562.pdf

It is so hard to tell if one is better than the other. Maybe buy a handful of each and try them all? I will just rely on you guys to help me pick some.

Thanks,
Mark

 

[jbeckva]

I've put the LM4562's in a few things like preamps, etc. I'd say that I've found my new favorite in the LME49860's but the LM4562's are a close second. Both are very detailed, but if I were to draw a difference between the two I would say the 49860 is less "harsh" - still definitely "there", but not quite in your face/ears.

Get 'em both. Or get the 4562's and PM me ... I have 2 of the 49860's left over I can send your way, not a problem at all!

 

[mlucitt]

Jer,
If you say they're good, that's enough for me. I sorta subscribe to the old saying that you get what you pay for (sometimes). The 49860 is slightly more $, must be that way for a reason.

I missed that you replaced your 4562's for the 49860's in the earlier post.
I'm ordering 10 of them.

Thanks,
Mark