Choosing Op Amp Upgrade for DAC (parameters to consider)

cdfr · 11th April 2011, 09:11 PM

I am seeking to upgrade my DAC Op Amps.

The DAC is a Studer D424 with a CS4329 followed by a combination of 8x 5532AN (4x DIP) and 4x MC33078 (2x DIP).

Reading the different threads on the web, it seems that the OPA2134 and LM4562 are popular.
However are they suitable for my circuit?
What parameters I need to look at? Apparently Studer chose to use 2 different Op Amps in the analog stage. There must be a purpose.

Thanks for any help.

whaleman · 14th April 2011, 12:17 AM

The OPA2134 is a drop in replacement for the NE5532, a very nice upgrade, it brings thing to life as I just did and A/B test today. I did not look at your circuit, but I would imagine the 2134 should be no problem replacing the 5532. Mine were 8 pin dual channel.

11th April 2011, 09:11 PM	#1
cdfr diyAudio Member Join Date: Jan 2005 Location: Seattle	Choosing Op Amp Upgrade for DAC (parameters to consider) I am seeking to upgrade my DAC Op Amps. The DAC is a Studer D424 with a CS4329 followed by a combination of 8x 5532AN (4x DIP) and 4x MC33078 (2x DIP). Reading the different threads on the web, it seems that the OPA2134 and LM4562 are popular. However are they suitable for my circuit? What parameters I need to look at? Apparently Studer chose to use 2 different Op Amps in the analog stage. There must be a purpose. Thanks for any help.

14th April 2011, 12:17 AM	#2
whaleman diyAudio Member Join Date: Oct 2009 Location: DC Area	The OPA2134 is a drop in replacement for the NE5532, a very nice upgrade, it brings thing to life as I just did and A/B test today. I did not look at your circuit, but I would imagine the 2134 should be no problem replacing the 5532. Mine were 8 pin dual channel. __________________ WHALEMAN The Cathedral Speaker Co.

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