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The Opamp thread - Page 296

post #4426 of 4812
Quote:
Originally Posted by razzz42 View Post

Quote:
Originally Posted by Theta Alpha 1 View Post

 

Huh?  Please advise me of a single DVD player or stereo receiver (for speakers) which uses LME49990, I'd buy it in an instant!

Even though it is a relatively a new chip still finding its way into mainstream production, it can be found in hardware today. I read it listed inside a few sound adapters (USB, stand alone, etc.) but I am not going to do all your homework for you.

 

Translation "There is no CD or DVD player using LME49990, I simply like talking."

post #4427 of 4812
Quote:
Originally Posted by Theta Alpha 1 View Post

 

Translation "There is no CD or DVD player using LME49990, I simply like talking."

You mean to say, "I can't afford a CD player that uses a LME49990 but I can dream."

 

post #4428 of 4812
You can certainly roll in the LME's in a CD player if it tickles your fancy to do hear it.
post #4429 of 4812
Quote:
Originally Posted by razzz42 View Post

You mean to say, "I can't afford a CD player that uses a LME49990 but I can dream."

 

 

The LME49990 costs $5, time-to-get-real-son.

 

Quote:
Originally Posted by DefQon View Post

You can certainly roll in the LME's in a CD player if it tickles your fancy to do hear it.

 

I use a $1 coax cable from my CD player to my LME49990 x5 DAC.  You a trippin'.

post #4430 of 4812
Quote:
Originally Posted by Theta Alpha 1 View Post

 

The LME49990 costs $5, time-to-get-real-son.

 

 

I use a $1 coax cable from my CD player to my LME49990 x5 DAC.  You a trippin'.

I didn't set the sucker's price for the example CD unit. Besides, if you ignore the price and bother to read the description of the Unit, it tells you how they went about designing and building the unit.

 

Other than that, be my guest at slanting and spinning what I type, I could care less. I hope your cable bypasses completely your CD internals except I would think using a Blue Ray DVD player to read CDs would be a slight improvement.

post #4431 of 4812
Hey,

Has anyone tried using LME49990 as buffers, with LME49990 in I/V (in the PB2, for example)?

I'm currently using dummy buffers with the LME49990 because every opamp I try as a buffer with LME49990 in I/V only diminishes clarity, even if it does improve headroom/dynamics (as with the HA5004).

Thanks,

Mike
post #4432 of 4812
Quote:
Originally Posted by zilch0md View Post

Hey,

Has anyone tried using LME49990 as buffers, with LME49990 in I/V (in the PB2, for example)?

I'm currently using dummy buffers with the LME49990 because every opamp I try as a buffer with LME49990 in I/V only diminishes clarity, even if it does improve headroom/dynamics (as with the HA5004).

Thanks,

Mike

This time around, was listening to Track Title : Lo Que Yo Más Quiero by Son By Four (2001)

 

Using AD-700 headphones and my old standard Prodigy HD2 (for testing),  with all empty sockets, the sounds are distant. With the stock OPA 2604AP and buffer/output empty, the sound is tinny in the highs, favors some lows, not very realistic (crap). Adding L49990MA in the output, it enhances whatever the 2604 sends it and brings all the sounds forward with a bit of detail resulting in higher quality crap sounds.

Tried the AD797BR with the output empty, favors the lows and mids, some very high end missing but clean detailed sounds throughout. Adding the L49990MA in the output, takes and clarifies the entire range and bring all sound forwards. Good clean fun.

Tried the NE5532N with the output empty. Clear and clean with no artificial enhancements, making all sounds equal across the ranges. Added the L49990MA in the output and resulted in excellent sounds. The entire range sounded true with clear highlights good separation and clarity. Highs were crisp. Lows and mids were true. Lows did not outright pound but sound clean nonetheless.

I could easily live with NE5532N(s) and the L49990MA in the output socket. Rivals all my past configurations when considering all around realistic sounds. Very enjoyable.


The tried and true NE5532N are only a couple bucks anymore. If you can only afford (1) adapter board with the two L49990MA on it then I would use it in the output along with your favorite op-amps  in the  I/V sockets.

Your mileage may vary.

Your welcome.

 

(I will note that I couldn't get (3) adapted L49990MA to work on the card at once in all three sockets, not sure why but doesn't seem to be necessary.)


Edited by razzz42 - 8/5/13 at 6:44pm
post #4433 of 4812

Thanks razzz42!

 

I'll try them as buffers!

 

Mike

post #4434 of 4812

The 992Enh-Ticha and 994Enh-DUAL up to +/-24V, output drive100mA class-A...both dip8 footprint

post #4435 of 4812

hello people, i've been asking a lot the same question around, and and i feel like many opamp users don't  know how to describe the opamp, all what does they say that this is better than that etc...



i only went for the AD8610 with uha6s.mkii and it was nice , smooth, warm , been using UM Miracle back then, and went for the op627 + magic tube d1 + senn 650 before and the highs were cool although i heard that senn 650 don't have the best treble,  now i have Yulong D100 MKII which i didn't enjoy its amp section although i had the TH600 so  i am looking into getting M-stage and changing the opamp. 

 

 

 

here is my final attempt ever before i lose the hope in opamp rolling, and go back to my old opamps. 

" looking to change the opamp of after i get it M-Stage going to use it with TH600 which tend to have nice Treble, Highs and not the best mids

for me the bass/treble comes 1st so i need to know what is the best option for me,

OP627x2  or AD8610x2 or LME49710x2 

i don't mind warm sig btw and i don't like the brightness,  i like the sound smooth and clean if possible but not to miss with the Treble/Bass/Highs ^^"
 

post #4436 of 4812

How you describe the sound when an op-amp 'colors' or 'darkens' or 'veils' or cuts out the highs or cuts out the lows or sound 'flat' is very arbitrary from the listener's point of view.

 

Best I can do is say it favors a certain range, like the highs or lows, then if it has clarity enough for good separation which leads to adequate staging.

 

Try http://www.ebay.com/itm/1pcs-Dual-to-Mono-LME49990MA-replace-OPA2604-NE5532-TL072-LME49990MA-/181118392690?pt=LH_DefaultDomain_0&hash=item2a2b7f5972 one of the better starting points.

 

A lot depends on the recording and phones/speakers you use, the amp then the DAC op-amps.

post #4437 of 4812

Hello, this is very interesting thread. Interesting and ...very long. I might miss something, but I have a question. Forgive me if someone already asked that question.Does it make any sense to judge op-amp sound quality in random circuit with op-amp rolling? As I understand correctly every circuit, that includes op-amps, needs careful implementation. Probably, there are some op-amps which will "tolerate" life in different environments. But, there are some, like AD 797, which will not work well in CMOY-style circuit. Should the proper judgment of sound quality be done by comparison of properly implemented op-amps with the circuits? 

I just have doubts you can use any circuits with randomly selected op-amp and get great sound. And in reference to op-amps.... APEX makes great chips with great sound properties.


Edited by Foton - 9/11/13 at 6:28pm
post #4438 of 4812
Quote:
Originally Posted by Foton View Post
 

Does it make any sense to judge op-amp sound quality in random circuit with op-amp rolling?

 

Ahhh. You're looking for an argument. You've come to the right place...

 

:popcorn:

 

w

post #4439 of 4812
Quote:
Originally Posted by wakibaki View Post
 

 

Ahhh. You're looking for an argument. You've come to the right place...

 

:popcorn:

 

w

 

I thought this was a cheese shop...

post #4440 of 4812
Quote:
Originally Posted by Foton View Post
 

Hello, this is very interesting thread. Interesting and ...very long. I might miss something, but I have a question. Forgive me if someone already asked that question.Does it make any sense to judge op-amp sound quality in random circuit with op-amp rolling? As I understand correctly every circuit, that includes op-amps, needs careful implementation. Probably, there are some op-amps which will "tolerate" life in different environments. But, there are some, like AD 797, which will not work well in CMOY-style circuit. Should the proper judgment of sound quality be done by comparison of properly implemented op-amps with the circuits? 

I just have doubts you can use any circuits with randomly selected op-amp and get great sound. And in reference to op-amps.... APEX makes great chips with great sound properties.

 

I think we would all agree with you Foton.  No component in any chain is allowed to sing solo.

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