[les_garten]

Here we go again with the Dead Fish smell...

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[majkel]

Quote:

Originally Posted by rufuss /img/forum/go_quote.gif Well I can tell you that the ZLH is the most natural sounding low ESR cap I've tried, in the power supply of a 2 channel headphone amp. I have Sanyo WG in another amp, and I had them in another C&C BOX too, but I don't recall them sounding quite as natural as the Rubycon ZLH is sounding (though my newly discovered OPA2376 opamps play a part here, too). Maybe the ZL were to low ESR for your DAC's regulators.

It probably depends what's the definition of neutrality. I don't say the WG's are transparent, neither I use them in any analog circuits. Digital supply, and that's it. For the analog sections I just take different kinds of those "for audio" electrolytic capacitors which are not expected to have extremely low ESR rather than low THD at 10kHz.

For the I/V stage I'd use a pair of OPA827, the JFET inputs will suck out less current from the DAC.

 

[majkel]

Regarding the Zero - I didn't pay attention what kind of DAC output it utilizes but as I said, the OPA827 might be nice for the I/V stage in general.

I read this document roughly a week ago or something and didn't find it bringing any revolution. There is too much concern about the CMRR which is not a frequent issue in today's audio, so looking at the sine graphs might lead to wrong choices. The THD elaboration is a good point, then there are some very valuable chips missing like the OPA228 or the AD8021.

I tried the LME49722 and I think the LME49720 is slightly better. I expected the opposite as there is probably less compensation in the LME49722. However, as I said before, decompensated op-amps like the OPA228 or the AD8021 are in their own league.

 

[laobrasuca]

yo majkel, do you think that one can use 3 LME49860 (1 DAC + 2 HP/pre amp) in the ZERO safely? I'm mean, Peete said that the LT1364 can go really hot if used in the DAC, is it the same for the LME49860?

Quote:

Originally Posted by les_garten /img/forum/go_quote.gif Here we go again with the Dead Fish smell...

I hope it's not me who's smelling fish, since everyone seems to ignore me! Or it's just because my questions are non sense or boring?

lao

 

[les_garten]

Quote:

Originally Posted by laobrasuca /img/forum/go_quote.gif yo majkel, do you think that one can use 3 LME49860 (1 DAC + 2 HP/pre amp) in the ZERO safely? I'm mean, Peete said that the LT1364 can go really hot if used in the DAC, is it the same for the LME49860? I hope it's not me who's smelling fish, since everyone seems to ignore me! Or it's just because my questions are non sense or boring? lao

It's not you. We have a certified Nut case named Andrea that is constantly IN/Out here. He's like a Moth to a flame with this thread. I reported him last night. Then I see this AM he's already back and playing his games. Once you get used to patterns, he's easy to spot.

He won't be able to avoid this thread. He's an Opamp FREAKster.

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[majkel]

@laobrasuca, you can try the LME49860, there is a voltage out DAC chip in the Zero. The LT1364 probably goes unstable in the circuit that's why it gets hot. Just see the document already two guys linked here - how did such high distortion appear in this op-amp? It sounds like unstable and it is unstable, that's why it gets hot. There are some fans of the LT1364 in this forum but it is a wrong chip for audio, period. You can try the LT1358, it is very close sonically and not getting hot. Last time I thought I even prefered it slightly to the LME49860.

 

[laobrasuca]

Quote:

Originally Posted by majkel /img/forum/go_quote.gif @laobrasuca, you can try the LME49860, there is a voltage out DAC chip in the Zero. The LT1364 probably goes unstable in the circuit that's why it gets hot. Just see the document already two guys linked here - how did such high distortion appear in this op-amp? It sounds like unstable and it is unstable, that's why it gets hot. There are some fans of the LT1364 in this forum but it is a wrong chip for audio, period. You can try the LT1358, it is very close sonically and not getting hot. Last time I thought I even prefered it slightly to the LME49860.

thx majkel, i'll put all three LME49860 together so since they seem to be very good at DAC as well as in the amp

thx for the advices.

EDIT: BTW, I will also try the LT1358 in the amp section to see if it pleases more my ears

@les_garten: y, i've already read about him, i'm aware of it (SAP, les_garden, or whatever), thx.

lao

 

[wdoerr]

OP amps ordered.
I will do an independent evaluation with the Compass.
Even thou it probably won't be allowed.

 

[les_garten]

Quote:

Originally Posted by majkel /img/forum/go_quote.gif @laobrasuca, you can try the LME49860, there is a voltage out DAC chip in the Zero. The LT1364 probably goes unstable in the circuit that's why it gets hot. Just see the document already two guys linked here - how did such high distortion appear in this op-amp? It sounds like unstable and it is unstable, that's why it gets hot. There are some fans of the LT1364 in this forum but it is a wrong chip for audio, period. You can try the LT1358, it is very close sonically and not getting hot. Last time I thought I even prefered it slightly to the LME49860.

The 1364 does run a bit hot in the Zero.

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[robjrock]

Sorry to be slightly off topic, but I just found this thread and figured better to post here than start a new thread...
Anyway, I recently swapped LM4562 for a LME49860 and to my ears they sound very different! yet many people swear they are the same... I noticed a lot of people discussing them here, was there ever any consensus that they are in fact different?

 

[haloxt]

I think they are different sounding. LME49860 is better but LM4562 presents things very 2D which makes it good for analytical detail.

 

[hopeless]

Quote:

Originally Posted by robjrock /img/forum/go_quote.gif Sorry to be slightly off topic, but I just found this thread and figured better to post here than start a new thread... Anyway, I recently swapped LM4562 for a LME49860 and to my ears they sound very different! yet many people swear they are the same... I noticed a lot of people discussing them here, was there ever any consensus that they are in fact different?

Different how?


BTW, I've been using the LME49860 inside the Super Pro 707, and it was very nice. However, I find the LT1469 to sound better (just as precise, but smoother in the mid-treble and more meaty in the bass) so that's the opamp of choice for the older Super Pro.

While for the newer, it's the TLE2142 (preferred to LM4562, LT1364 etc.).

Unless the OPA2211 dethrones it as soon as the proper adapter arrives.

 

[robjrock]

LM4562- loads of detail, aggressive, fast, intense. Very involving and the detail is amazing, but a little harsh, especially in the treble.
LME49860 - like a 'polite' version of the LM4562 - sweet and neutral with nice treble but lacks the detail and intensity of the LM4562

I like em both, but I keep coming back to the LM4562, I guess I'm a sucker for detail - this may change when I get my Grado's though (I'm willing to guess they don't make the best match)

I will hopefully be getting LT1028 soon, which the original reviewer rated higher than the LM4562, so that'll be interesting...

 

[hopeless]

I like the TLE2142 better than the LM4562. It sounds more natural, more solid, and has similar detail.


Try the LT1358 as well. The LT1028 is very nice, quite transparent though a little bit drier/harder than the former.

 

[ROBSCIX]

The LM4562 and LME49720 are also said to be the same and share the same spec sheet but many swear they hear differences.

LM4562 Spec sheet

LME49720 Spec sheet