The Opamp thread
Aug 11, 2015 at 1:14 AM Post #4,936 of 7,354
Spud, what buffer are you using in the last pic?
a7419391af7aefa5bf51ee3a86d677cc.jpg

Currently using Signetics NE5534AN OBCA with 4* HA5002 and 2* buf634 on my mad dog fi.quest. Prefer ne5534 to muse01 & muse02 atm
 
Aug 11, 2015 at 4:50 AM Post #4,938 of 7,354
I can imagine it a pita to for those in.
 
Aug 11, 2015 at 5:11 AM Post #4,939 of 7,354
Got A couple of AD797BRZ's sorted last night with great results. Imaging and soundstage seem greatly improved. The caps were from a stash that came with some pcb's I bought a few years back. Still not 100% proficient soldering those tiny ceramics...


 
Aug 11, 2015 at 7:41 AM Post #4,941 of 7,354
Yup. I know Phillips bought over Signetics, and there is JRC and TI who make them too. Signetics ne5534/5532 made in the 80s are the best sounding version and may be one of the best sounding opamp ever according to most including Dr. Xin. The one I had are made in 1983
 
Aug 11, 2015 at 12:07 PM Post #4,943 of 7,354
Are your OBCA adapters for the 5534's the same as this? I made these years ago for AD744's.... Been on the OpAmp rolling/modding wagon for a while :)
 
i cut the leg and solder the resistor direct to the opamp. But you can use the adapter for ad744 for ne5534 since their pinout is the same.
 
Aug 13, 2015 at 2:37 AM Post #4,945 of 7,354
Aug 13, 2015 at 3:33 PM Post #4,946 of 7,354
Still waiting on my 1982 5534AN's but a couple of others arrived today... One of them is Raytheon! Never had a chip marked with this, only tubes.



If the 1982 made OpAmps are better than these, I am going to be very, very happy. I am amazed how great these sound, I will be auditioning all evening. This is one of those very rare occasions where something great doesn't cost the earth.

Thanks theory_87 :beerchug:
 
Aug 13, 2015 at 4:51 PM Post #4,947 of 7,354
Any idea what kind of op-amp can replace the LME49710s in this circuit? So far, LME49990s are proven to work. Thanks!
 
Aug 13, 2015 at 10:38 PM Post #4,949 of 7,354
Still waiting on my 1982 5534AN's but a couple of others arrived today... One of them is Raytheon! Never had a chip marked with this, only tubes.



If the 1982 made OpAmps are better than these, I am going to be very, very happy. I am amazed how great these sound, I will be auditioning all evening. This is one of those very rare occasions where something great doesn't cost the earth.

Thanks theory_87 :beerchug:

:D glad to be of help. I never imagine i will prefer ne5534 over muse01/02 considering the price difference. Will be interesting to hear your opinions on the different make ne5534 since i never try other makes ne5534.
 

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