[Mad Max]

TO-99 versions of opamps tend to sound a little better than their plastic and ceramic DIP versions.

 

[Mad Max]

Damn, HA3-2525-5 is a stunning opamp, but in my Minibox-E+ it is very noisy and a lot less in the Compass, but in the Matrix M-Stage, it just shines like 

 

 

I'm loving these Intersil opamps more and more.

 

[leeperry]

 

 

 

 

I'm loving these Intersil opamps more and more.

Just when I thought I had finally controlled my Andrea-itis syndrom

 
ok, I'll bite! do they have any very fast opamp à la LT1363?

 

[Mad Max]

I think you should probably ignore my rants in this thread. 

 
LT1363 sounds real good in the this amp, too.  Even Earth sounds decent.  It sounds like s*** in the Compass DAC, but in this amp it is good.  I think 2525's output current is what is giving it the edge against the rest.  Will take current measurements later, too busy rediscovering my music right now.  Surprised at how quiet 2525 is in this amp.

 

[TuR3]

Hi! I have an headphone amplifier with 2xAD8610. Which opamp with FET input and better characteristics and of course that will sound better, could i install to substitute them? Perhaps ADA4627-1?

 

[majkel]

OPA827, AD825, AD744 if SOIC version exists.

 

[TuR3]

Quote:

OPA827, AD825, AD744 if SOIC version exists.

Thanks, i will search for them. Is there anything in PDIP package? My AD8610's are on browndog adaptors.

 

[majkel]

AD744

 

[Avro_Arrow]

LT1363
 
Quote:

Thanks, i will search for them. Is there anything in PDIP package? My AD8610's are on browndog adaptors.

 

[leeperry]

 

 
LT1363

X2

 

[TuR3]

As i have understood reading the datasheet it has BJT input.
Quote:

LT1363
 

 

 

[majkel]

Quote:

As i have understood reading the datasheet it has BJT input.

Exactly. This is why I refrained myself from recommending anything but JFET input op-amps known to me as good sounding.

 

[Soymilk]

im debating between using a lm4562 or ad823 for my cmoy (i have both on hand). from my digging around i only see bad/unfavorable things about the ad823; should i just go with the lm4562?

 

[dlaloum]

Hi Folks
 
I have an M-Stage on the way to me along with a Class A mod socket and a bunch of opamps to try out
 
Could people who have played with the M-Stage please provide some feedback as to which opamps work well with the M-Stage (Lehmann Black Cube Linear) design, and which respond well to Class A (resistor) Biasing and how much biasing?
 
The selection of opamps I will have early next week are:
 
 
OPA627

OPA637

AD797

AD744

LT1028

LME49860

OPA2107

OPA2111

OPA228

OPA49720

 

I know some of these can be unstable in some circuit designs (AD797) but don't know enough to know what design or whether those comments apply to the M-Stage

 

thanks

 

[Mad Max]

Welcome to the club. 

 
OPA637  will work if you raise the gain
LT1028  will oscillate
 
The rest will work, most likely.
 
Of that list, I have AD797, 744, LME49710/49720, and LT1028.  797 sucks the soul out of the music, even in the M-Stage and 49710's artificiality bothers me, but you may like them.  744 responds well to both class A and output bypass, I just haven't tried it in class A in the M-Stage yet.
 
I recommend TL051 and especially HA3-2525-5 if you can get your hands on a pair.
 
I have yet to bother with Class A, so I can't tell you how they respond, but I've seen posts here of people talking about how some of these respond to class A biasing.  Do a search.