Good replacment for BB OPA 2604/604 - Page 5

SimontY · 12th February 2005, 11:03 PM

Quote:

Originally posted by Gaucho
I believe there are some varying opinions about this but the op-amps that I've tried I have heard little difference when socketed compared to soldered. Use a good quality dual leaf socket like Aries Electronics part no. C9108.

Great, I'll use a socket. I cannot see that part number on their website, or on Farnell's. But I think I know roughly what I'm looking for... something like this?
http://uk.farnell.com/jsp/endecaSear...=4168549&N=401

Thanks,
Simon

SimontY · 12th February 2005, 11:08 PM

Quote:

Originally posted by carlosfm
I was talking about your description of the OPA2604's sound.
Very accurate.

Nah...
The op-amp is enough.
Don't worry, too many times I take out too many unnecessary parts on commercial gear.
And then it sounds better...

Gaucho · 13th February 2005, 12:00 AM

Quote:

Great, I'll use a socket. I cannot see that part number on their website, or on Farnell's. But I think I know roughly what I'm looking for... something like this?

That would probably be fine, I haven't used a turned pin style socket though.

The C9108 is avaliable from DigiKey.

http://ca.digikey.com/scripts/DkSear...?KeywordSearch

SimontY · 13th February 2005, 12:00 AM

Popular dual op-amps used in cd players seem to be:
OPA2132 (or 2134)
AD826
LM6172

So here we have Texas, Analog Devices, and National. I think I will order up some of each and try them... maybe try to make it a totally blind test if I can find a helper

(altho I do get confused on quick listens..)

SimontY · 13th February 2005, 12:02 AM

Quote:

Originally posted by Gaucho

That would probably be fine, I haven't used a turned pin style socket though.

http://ca.digikey.com/scripts/DkSear...?KeywordSearch

Thanks.

Ahh, I see the part you suggested now. Fairly pricey...

Gaucho · 13th February 2005, 12:08 AM

Quote:

Ahh, I see the part you suggested now. Fairly pricey...

I have also used the cheaper dual leaf AMP/Tyco 2-641296-2 (DigiKey part no. A24794) and it sounds fine to my ears.

Gaucho · 13th February 2005, 12:12 AM

Quote:

Try this: remove the electrolythic.

Okay, I will try this but I can't imagine what good it will do.

Peter Daniel · 13th February 2005, 12:31 AM

I like this type of sockets

Peter Daniel · 13th February 2005, 12:34 AM

Quote:

Originally posted by SimontY
Popular dual op-amps used in cd players seem to be:
OPA2132 (or 2134)
LM6172

Of those two, I prefered LM6172.

Gaucho · 13th February 2005, 12:47 AM

Quote:

Of those two, I prefered LM6172.

Peter, where are you sourcing those beautiful sockets from?

13th February 2005, 12:00 AM	#44
SimontY diyAudio Member Join Date: May 2003 Location: Sheffield, North England	Popular dual op-amps used in cd players seem to be: OPA2132 (or 2134) AD826 LM6172 So here we have Texas, Analog Devices, and National. I think I will order up some of each and try them... maybe try to make it a totally blind test if I can find a helper (altho I do get confused on quick listens..) __________________ Fave. threads: Marantz CD63 \| Philips CD650 \| my 3-way dipoles \| T-bass for dipoles \| EnABL treatment \| Arcam Alpha (CD)

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