[headphoned]

.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.
 
I'm impatient to get the missing parts & complete my DAC, to hear how it performs with those LT1363 without sockets and stuff.

 

[bcpk]

Could anyone suggest an op-amp for my MiniBox E+?

 

[headphoned]

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 sound, try a couple of TL051.

 
 
EDIT: You can use the OPA228P too.

 

[SpudHarris]

Quote:

Another good choice is the OPA132UA (don't overlook this - it sounds better than the OPA827 in some ways, so judge for yourself).
 

 
Ahh, those were the days when Andrea used to post this every day

 

 

[headphoned]

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

 

[SpudHarris]

If you remember I was totally in agreement, I still like the OPA132UA very much. In the right place it is beautiful. In my Fi-Quest the OPA637's are never bettered but in my P3+ amps (which won't work with the 637's) I just adore the ADA4627-1BRZ's and also the OPA2111AM.
 
You really have to try the ADA4627's.....

 

[headphoned]

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

 

[headphoned]

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

 

[Mad Max]

Quote:

Could anyone suggest an op-amp for my MiniBox E+?

ADA4627-1BR will sound the very best. What source are you using it with?
 
I find AD744JN or AD744AH to have the best tonal synergy with ipod classic 6g.

 

[SpudHarris]

Quote:

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

I have both of these but the ADA4627's are just better, fuller. The OPA1611's are nice but much like the OPA132UA they only shine in paricular circuits or applications, to my ear in comparison they are bland. What I have found though is that they are one of the best opamps for ground in both the P3+ & Fi-Quest.
 
The ADA4627's sound just fantastic no matter what I've used them with. Ryuzoh who developed the Fi-Quest (& really knows his stuff) told me that they bettered the OPA637's, personally I think they are as good but just different. In my experience anyhow.
 

 

[headphoned]

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.

 

[headphoned]

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

 

[bcpk]

Quote:

ADA4627-1BR will sound the very best. What source are you using it with?
 
I find AD744JN or AD744AH to have the best tonal synergy with ipod classic 6g.

iPod Video 5G and Etymotic ER-4P. Do any of these reduce the hiss of the MiniBox? It's pretty bad.

 

[headphoned]

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.
 
 
 

 

[headphoned]

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