[buz]

You can get dual SMDs that are marginally larger than a normal dip package on ebay for quite a few opamps.

BTW: is it safe to plugin the 200USD headphones if the Sansa throwaways work fine? My DMM seems to be out of power

 

[lordearl]

thanks buz,
can you put a link up so I can see what I'm looking for?

cheers mate

 

[lordearl]

thanks buz,
can you put a link up so I can see what I'm looking for?

cheers mate

 

[buz]

Dual to Mono Op amp module 4558 NE5532 TL072 to AD797BR - eBay (item 350336041861 end time May-02-10 05:48:20 PDT)

Tho watch out, many fakes on ebay. That particular seller is probably ok but you never really know

 

[lordearl]

wow that's tiny, excellent - not ultra cheap, but still, the soldering is done so that makes it easy. I'll try to find one with exceptional PSRR, let me know if you think of one.

 

[netsky3]

Quote:

Originally Posted by netsky3 /img/forum/go_quote.gif Can someone help me to choose a good opamp for my amp? I have a kit by oatley like these Raytheon JAN6418 Valve (Tube) Preamplifier / Headphone Amp Kit but i'd like to do some tweaks. Now the output power is just enough for a good volume, there are opamps wich can drive better my AKG at 55ohms? Sorry for the dumb question...

Quote:

Originally Posted by kuben /img/forum/go_quote.gif AD797BR AD797 SOIC to DIP Adaptor with IC NEW! (1 PC) - eBay (item 370363043171 end time May-09-10 23:29:26 PDT) AD797AR AD797 SOIC to DIP Adaptor with IC NEW! (1 PC) - eBay (item 370363043615 end time May-09-10 23:32:07 PDT) Dual AD797AR AD797 SOIC to DIP Adaptor with IC New! 1PC - eBay (item 370363041983 end time May-09-10 23:23:37 PDT) Yeah at last dual ad797 on 8dip adaptor! (ordering)

Your reply is for me?

 

[kuben]

Quote:

Originally Posted by netsky3 /img/forum/go_quote.gif Your reply is for me?

No, but i maybe it can

AD797BR's are dual or single?
For stx i need dip8 dual opamps.

 

[buz]

AD797 is single, but the link above is for two AD797 on single to dual adapter (disclaimer: I did not try it)

 

[ROBSCIX]

Quote:

Originally Posted by kuben /img/forum/go_quote.gif No, but i maybe it can AD797BR's are dual or single? For stx i need dip8 dual opamps.

The ST(X) requires dual channel opamps in all three replacable sockets.

You would need to buy or make adapter units with two AD797 units on each adapter.

 

[netsky3]

Quote:

Originally Posted by kuben /img/forum/go_quote.gif No, but i maybe it can AD797BR's are dual or single? For stx i need dip8 dual opamps.

LOL!
I'm looking for a good opamp on ebay at low price but i don't know own qualities and i'm interested to a good power that can drive my headphones.
No one can help me?

 

[lordearl]

netsky - I built that kit - you don't need to change the opamp. Let the amp burn in for at least 100 hours, then consider it. The opamp won't really change the sound.....

 

[netsky3]

Quote:

Originally Posted by lordearl /img/forum/go_quote.gif netsky - I built that kit - you don't need to change the opamp. Let the amp burn in for at least 100 hours, then consider it. The opamp won't really change the sound.....

Really?
In another topic a user has tried some opamps and said the vary differences to the sound.
Another thing important for me is the output power, i'd like to increase if possible, do you think that the supply of 12V is not enough for my akg?

Thanks

 

[lordearl]

I think it's always important to hear the sound signature before you make a change - otherwise you won't know what to listen out for.

I have the K701 and the power is fine....

 

[Mad Max]

AD8065AR pumps out more juice than the other opamps I have, barring 797.
It is a mono opamp, so it needs to be soldered to a 2x1 adapter or something.

For dip8 mono opamps, I bought a pair of these and they are excellent. Very sturdy and very good contact. I bought these to replace the ones I bought months ago from vze3k8zw, they are terrible, oxidized already, and make very poor contact without bending the pins quite a bit.

 

[netsky3]

Quote:

Originally Posted by lordearl /img/forum/go_quote.gif I think it's always important to hear the sound signature before you make a change - otherwise you won't know what to listen out for. I have the K701 and the power is fine....

Sure but for few dollars i'd like to try something

Quote:

Originally Posted by Mad Max /img/forum/go_quote.gif AD8065AR pumps out more juice than the other opamps I have, barring 797. It is a mono opamp, so it needs to be soldered to a 2x1 adapter or something. For dip8 mono opamps, I bought a pair of these and they are excellent. Very sturdy and very good contact. I bought these to replace the ones I bought months ago from vze3k8zw, they are terrible, oxidized already, and make very poor contact without bending the pins quite a bit.

Interesting