Good replacment for BB OPA 2604/604

[Gasho]

Better OPs that have same type of pacage and are double/single version like 2064/604?? Sugestions wanted

 

[Upupa Epops]

OPA 134 / OPA 2134 .

 

[mlloyd1]

and the specific application is ...?

 

[Gasho]

and the specific application is ...?

Analogue stage of cd players. But my question is general beter replacement for this OPs in sound quality and specifications.

 

[Nuuk]

Analogue stage of cd players. But my question is general beter replacement for this OPs in sound quality and specifications.

I'm sure this topic has been covered before in the Digital forum!

But this is one of those topics where you will get as many suggestions as there are opamps in your parts supplier's catalogue. As ever, it's more a question of trying a few to see which you[.b] like the best! And much depends on how much you want to spend!

 

[Cobra2]

Good replacement?

OPA 134 / OPA 2134 .

I would say a boring replacement...I find the 604 more "musical".

Arne K

 

[Upupa Epops]

Arne, wash your ears - 604 have hearable bigger distortion and distortion isn't music.

 

[carlosfm]

Arne, wash your ears - 604 have hearable bigger distortion and distortion isn't music.

Whoha Upupa, I absolutely agree.

Compared to the OPA132/2132 (or 4) the OPA(2)604 has a "raw", less defined, more "scratchy" midband and treble.
Also, the (2)132 has real BASS dynamics.

 

[Cobra2]

OK, agree...

-evening is spoiled anyway...
I have ~50 x OPA604 for trade/sale...

Arne K

 

[carlosfm]

Deal?

-evening is spoiled anyway...
I have ~50 x OPA604 for trade/sale...

Arne K

Would you trade those for some "hand-selected" JRC op-amps?

 

[Nuuk]

Would you trade those for some "hand-selected" JRC op-amps?

 

[Cobra2]

Re: Deal?

Would you trade those for some "hand-selected" JRC op-amps?

Already have a bunch of them too...(strangely, most of them have been used...)

Arne K

 

[carlosfm]

Re: Re: Deal?

Already have a bunch of them too...(strangely, most of them have been used...)

Arne K

 

[hollow_man]

The opa604? Definately not the op-amp for hi-end sound. Had great expectations initially, but compared even to devices like the AD847 it sounds artificial and closed-in. Nope, not for me, thanks.

 

[Brad-Man]

I heard from Norbert Lehman that the new op-amp in the revised Black Cube Phono amp was a BB OPA 2604. The original BC used an AD OP275.

Would the 132 be better here too?

Thanks

 

[carlosfm]

I heard from Norbert Lehman that the new op-amp in the revised Black Cube Phono amp was a BB OPA 2604. The original BC used an AD OP275.

The OPA2604 sounds better than the OP275.

Would the 132 be better here too?

Yes.

 

[Gaucho]

The 2132 (P version) is fat/wooly sounding, but it's still a little better then the 2134AP. Perhaps some like the 2132 because it fattens the rather lean/bright sound of their system. It certainly won't make anyone's ears bleed, that's for sure.

I would like to hear some opinions of the 8620.

 

[carlosfm]

The 2132 (P version) is fat/wooly sounding, but it's still a little better then the 2134AP.

No it's not.
You just don't know how to use it.
And yes, I KNOW what you're talking about. You've hit the spot.
Hint: PSU bypass.

I would like to hear some opinions of the 8620.

The OPA2132 is much better.

 

[ericpeters]

Hey Carlos,

I know it matters where to put the bypass, but how important is the quality/size of the cap used?

I just used what I had laying around, and it improved my project dramatically. I'm now wondering if a high quality/right size cap will even improve that.

 

[carlosfm]

I'm now wondering if a high quality/right size cap will even improve that.

It does.
Search this forum and you'll find my hundreds (thousands?) of posts about that.
I suppose it's easy to find.