In that case you can try the LT1364, LT1057ACN8, OPA2132P and the TL052CP (or ACP), then choose yourself :)

Yes they are, but I still think that LME49725 & LME49880 are better sounding opamps overall. The EL2228 is slightly less easy to use but it's the most detailed dual opamp I know.

I highly recommend trying the EL2228 too. It only exists as a dual opamp but it's worth it :)     The TL051 still amazes me in the CMOY, it is just perfect :)   If you like musical and lush, but clear, try TL052 and TL051 also in line stages.

Ok. :) To me the AD746 was much too cold. Even the AD8620, which is not a very colorful chip, sounded more musical. The OP275, as I remember, was the most musical of this trio.     Nowadays I'd use the LME49725 or LME49880, or the OPA1612 naturally =)

I agree about the LT1364, & would add the LME49880, TL052, LME49725, LME49723. :)     Especially the LME49725 :)

The TLE2141 is mediocre, the OPA1641, OPA132UA and TL051 being far better. The LME49880 is also another world, however dual (what's this mépris for anything "dual", BTW)     I'm of the opinion that when a DIP opamp don't please your senses, you can't fix it by replacing its package with...

Also, I notice that the OPA1641/1642 has completely disappeared from the discussion. It's just a pity, because that's one very good FET opamp, and one that is rail-to-rail and low-power-consumption too, thus potentially perfect for those portable amps. I do find that the bipolar counterpart the...

BTW based on my memory I would much prefer to use a LME49880 (FET opamp with very low distortion & natural sound) to a AD746. I guess I'd prefer the TL052 too :)

Quote: I know this for a fact: the ADA4627-1 can't but have a similar tonality to the OPA627, and I never found the OPA627 enjoyable (musical) enough. :)     Yep, the LT1028ACN8 is crystal clear yet remains fluid and musical. I think the OPA1611 is just a bit better (rounder & more...

Quote:   Well said. :)   I use a pair of bookshelf speakers, anyway. Nowadays I only use my phones in a secondary system & driven by the CMOY. I do plan to break out my HD650 again some time soon :)     Try the EL2228 too, it's a great chip: full & fluid sounding yet quite...

So you're putting it on the same level as a OPA2111AM. Therefore, OPA1611 and LME49720HA (two of my favorites) are definitely competitive with the ADA4627-1. Most probably the AD845KN too :)

To me the ADA4627-1 looks like another OPA627. I'm sure it's going to sound clear and unmusical. Luckily I have a number of OPA827 with me, in case a FET opamp is what I strictly need.

I don't know why you listen to his suggestions and not mine, lol. Anyway the ADA4627-1 is specified at +/- 5V or more, check supply voltage or you're gonna waste your money. The OPA827 is specified at +/- 4V or more. I still recommend the latter. :)     The LME49710 is a mediocre choice...

Broke it intentionally after something went slightly wrong, lol. I'm toooooo emoooootionaaaaallll with these things, hehe

At the end of the day, a couple of LT opamps, namely LT1028 and LT1363, are some of the best I've ever heard. Plus they happen to have a kind of synergy.   After the Super Pro is repaired, I could get a new NG98 (mine is no more ;) probably with the AD1852 (just for a change), and give it...

What? The LT1028 less detailed than an AD8610? It's totally the opposite, IMHO. I think you're confusing aggressiveness with detail. Midrange articulation, for instance, is far superior with the LT1028 than with the AD8610/8620. And I don't remember the AD746 (dual AD744) as being ultradetailed...

The LT1028ACN8 would have a great synergy with the BUF634 too. You can try that. It has extremely low noise. And can sound magical.

I think you don't need such an amp for those phones, since they look very efficient, hence the hiss. :)   Anyway the OPA827 will be best with the BUF634 in terms of synergy.      

The OPA627 doesn't compare with the OPA1611, anyway.

To me, the OPA1611 is a very neutral, coherent chip. I like BB chips because they sound subtle, whereas the AD chips tend to sound a bit crude. I will give that ADA4627-1 a try. The OPA1611 had a full sound to me, with transparent timbre. :)

If someone could compare OPA1611 and ADA4627-1 ...

Not that easy right now, but I'll try :)     The OPA2111KP had a serious lack of midbass to me?

Did I? Anyway it's a good chip, not the best ever seen or heard.

Depends on the supply voltage and if it wants FET opamps. You can safely use the OPA827 anyway, which is sonically a good combination with the BUF634. Another good choice is the OPA132UA (don't overlook this - it sounds better than the OPA827 in some ways, so judge for yourself).   For tubey...

.28 V/uS and 540KHz of bandwidth - that starts to be slow, LOL.     Personally anyway the AD opamps don't make me too happy, excepting the AD845KN which is quite good (overall preferable to the AD797 for +/- 12V or more, to me). I do acknowledge that I have not heard the ADA4627-1 yet.  ...