What's the different between OPA-541AM, OPA-541AP and OPA-549T

100db · 4th September 2006, 03:57 AM

Hi
Anybody have a chance to compare all of these OPAs side by side ?

I used to build all of them ( including 3875 and 3886 ) using inverting configuration, but never have a chance to compare them side by side because alway blow it up by mistake ( I didn't use current limit Resistor ).

I know the OPA and LM are different ( in sound characteristic ) but don't know if there are any different between the OPAs.
My feeling is 541 give tighter bass than 549 ?
Is the 541 more powerful ?

Thanks very much !
Ball

100db · 7th September 2006, 03:26 AM

Any one experience this ????

At least on the power, by theory... 541 @ +/- 35v should give higher power output than 549 @ +/- 25v, right ?
But I saw one post about feeling on 541 not as strong as the paper claim, just would like to confirm this.

thx.
Ball

4th September 2006, 03:57 AM	#1
100db diyAudio Member Join Date: Dec 2005 Location: Bangkok, Thailand	What's the different between OPA-541AM, OPA-541AP and OPA-549T Hi Anybody have a chance to compare all of these OPAs side by side ? I used to build all of them ( including 3875 and 3886 ) using inverting configuration, but never have a chance to compare them side by side because alway blow it up by mistake ( I didn't use current limit Resistor ). I know the OPA and LM are different ( in sound characteristic ) but don't know if there are any different between the OPAs. My feeling is 541 give tighter bass than 549 ? Is the 541 more powerful ? Thanks very much ! Ball

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7th September 2006, 03:26 AM	#2
100db diyAudio Member Join Date: Dec 2005 Location: Bangkok, Thailand	Any one experience this ???? At least on the power, by theory... 541 @ +/- 35v should give higher power output than 549 @ +/- 25v, right ? But I saw one post about feeling on 541 not as strong as the paper claim, just would like to confirm this. thx. Ball

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