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The Opamp thread
Apr 9, 2012 at 5:34 PM Post #3,796 of 7,383
any love for OPA1662? Amazing low end and imaging in my set up. Not sure if you'd class it as tubey but I guess results will vary dependant on circuit. It's a must have in anyones collection either way.
 
Apr 15, 2012 at 7:49 AM Post #3,797 of 7,383
Hi Mad Max,
If you have a set of LME 49720 or LME 49710 and have been listening to the ADA 4610-2brz can you swiched them to the LMEs and tell me what you think?  In my circuit I think the LME are more detailed in the microdynamic area and brings the midrange back into the sound stage.  The LME has resolution in the bass where the ADA 4610-2brz are wider in soundstage, more focus on voices and lack the ability to emphasize the micrdetails.
 
Looking foward in yours or anyone else that can conduct this experiment 
smile.gif

 
Apr 23, 2012 at 9:46 AM Post #3,798 of 7,383

 
LME49720 (Metal can) has more authority. More RAW if you can guess what I mean. 
Deeper bass. but the high is a bit sibilant and slighting piercing. 
 
AD4610-2BRZ is more polite. More Details, layering, seperation is clearly better. 
It is slightly smoother. 
 
LME49720 is better for Rock and Guitar, 4610 is better for Classical
 
Tested by just changing the OP-AMP nothing else change. Volume un touch. 
 
 
 
Apr 23, 2012 at 5:58 PM Post #3,801 of 7,383
Hi everyone


I read this forum for a long time, I have never post anything because my english is so poor...
Thank you for all the informations.

I have use the 4562 for a long time (it is the same as the lme49720).
the metal can is better, I confirm.

The details are very good, but it lack of life, the high are pro-eminent and the voices are not so good, it's boring after a long time.
They have to be combined with more 'musical' opa or amp to be good.
All the LME have the same kind of defaults, if you like this kind of sound you should tried:
- LME49725, LME49722 I prefer them over the 49720, they are even more detailed,
- LME49713, is more natural, very fast and powerful, but it can oscillate, (cfa amp / 1.2kR feedback resistor necessary) it can be a good headphone amp (for high efficiency headphone)
- LME49990 is the more detailed, it can be harsh, but I like it.

The 4610 have the same kind of sound than 4627, 827 and 627, it's coloured like a valve amp !
The 4610 and 4627 are the kind of this type of sound, they are detailed, with a large scene, it's not me cup of tea, but sometime it can be good...


My preferred are : opa2211 (highs a little metallics), ada797 (grainy sound), op1662 (equilibrate, with a good energy, but not very detailed), opa1612 (too sweet; forgiving, and a good "foot tape factor").

And for the Jfet (it's less good) : opa2142, opa1642 (the highs are not naturals), ada4610, ada8620....


Good listening

Proton






 
Apr 27, 2012 at 11:33 AM Post #3,803 of 7,383
 
Quote:
formula1 said:
Do you guys notice the difference between A and B track? 
http://bursonaudioblog.blogspot.com/2012/02/marantz-cd72-hd-opamp-mod-with-sample.html
 
Been considering to mod my CDP with their opamps. 
Thanks. 
Click to expand...

 
Yes, but did you compare the price difference?(its "under $10-20" and "$160" /pair), For my opinion n taste, if i can do opamp ic rolling for under $20/pair, i'll do it for my $200 cd player but for $160/ pair burson opamp, hell no
rolleyes.gif

Otherwise, i still using my Goldmund stuff (36 cd player,12 DAC, 22 pre-amp, and a pair 29.4 amp), its away better sound than burson
popcorn.gif

 
 
Apr 28, 2012 at 5:10 AM Post #3,804 of 7,383
hi

Burson are coloured, characteristics are bad (distortion ...), some guy like this, but not me.
Definition is bad, it's veiled, all the instruments have the same sound, after a long time it's boring.

You can try it, it's a lot of money but you can like it.



 
Apr 28, 2012 at 1:40 PM Post #3,807 of 7,383
 
Quote:
tommy thong said:
 
 
depend on your taste n you need to roll it yourself, these are the choice:
- LME49990 is neutral n nice
- LT1122 is more microdetails n crips
- OPA1662 is so sweet on mids n vocals, nice tight bass
 
Click to expand...

 
That's exactly right!!
 
Personally I also like OPA602BP (CM in my EF-5), neutral but nice detail. kind of between the 49990 and LT1122. Also, I like ADA4610-2-BRZ, these are very nice indeed and great match with my musical taste (Shpongle - Younger Brother - Aes Dana - Asura - Sergio Walgood - Astropilot etc...etc...)
 
Apr 28, 2012 at 2:03 PM Post #3,808 of 7,383
 
Quote:
ecohifi said:
Hi Mad Max,
If you have a set of LME 49720 or LME 49710 and have been listening to the ADA 4610-2brz can you swiched them to the LMEs and tell me what you think?  In my circuit I think the LME are more detailed in the microdynamic area and brings the midrange back into the sound stage.  The LME has resolution in the bass where the ADA 4610-2brz are wider in soundstage, more focus on voices and lack the ability to emphasize the micrdetails.
 
Looking foward in yours or anyone else that can conduct this experiment 
smile.gif
Click to expand...

 
Actually, 4610 just sucks at microdynamics versus all the others I have, lol!  I wonder why.  I somehow overlooked this.
 
Apr 29, 2012 at 7:33 AM Post #3,809 of 7,383
 
Quote:
mad max said:
 
 
Actually, 4610 just sucks at microdynamics versus all the others I have, lol!  I wonder why.  I somehow overlooked this.
Click to expand...

 
So you actually did what I requested on a previous post and discovered what I found or are you just joking???
confused_face_2.gif

The microdetails are somewhat compressed and not so emphasis compared to the LME 49720.  Im going to listen to these for a while and then change to the ADA 4627-1brz
 
Apr 29, 2012 at 6:19 PM Post #3,810 of 7,383
Not microdetails, the dynamics.  I do not hear a difference in microdetail retrieval.
ADA4627 also beats 4610 with dynamics.
 
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