Q re the OPA2227 Opamp

Albinoni · 25th January 2010, 01:49 PM

I am planning to try a OPA2227 Opamp into one of my CMOY amps, and would like to ask some Qs re this opamp:

1. Whats the SQ like of the Opa 2227?
2. I have heard it sound close to a Tube Amp, is this true?
3. Is there much of a diff between the Opa 2227 and Opa 2228 and which one
do you prefer ?

4. Up to how many Volts will the Opa 2227/2228 take ?
5. Whats it like on batt consumption ?

Thanks

wahab · 25th January 2010, 02:21 PM

227/2227 is too slow, and the 2228 is no wonderfull thing either..
the latter has a few qualities, but nothing extraordinary, unless the
price is very low...

Andrea: · 25th January 2010, 02:23 PM

I don't think the OPA2227 is too slow. I'd rather say it's too cold

cjkpkg · 25th January 2010, 03:05 PM

I recently replaced the opa2227 with the LT1358 and have been really impressed.

Using it in a preamp feeding an LM3886 amp with fostex fonkens.

While I still dont like it as much as my aikido, it is a very nice combination.

Andrea: · 25th January 2010, 03:08 PM

Quote:

Originally Posted by cjkpkg

I recently replaced the opa2227 with the LT1358 and have been really impressed.

Using it in a preamp feeding an LM3886 amp with fostex fonkens.

While I still dont like it as much as my aikido, it is a very nice combination.

Good idea! 1357 + 3886 = 135678 , and besides that, the LT1358 is really a good chip

Andrea: · 25th January 2010, 03:21 PM

Try also the LME49725 with the LM3886

jcx · 25th January 2010, 04:04 PM

its interesting than no one needs to know the gain of your amp, the impedance, sensitivity of your headphones, listening SPL, or power supply V to answer so definitively about op amp sound quality

certainly makes me question the quality of the opinions

Albinoni · 25th January 2010, 04:05 PM

Ok thanks for your reply, but quite surprisingly for eg why does alot of Opamp users such as Bio Science Geek and Bass Boost II use the Opa2227 amp and all swear by it, I mean to me it looks like this seems to be the most popular Opamp out there for CMOY amps.

Andrea: · 25th January 2010, 05:02 PM

Quote:

Originally Posted by jcx

its interesting than no one needs to know the gain of your amp, the impedance, sensitivity of your headphones, listening SPL, or power supply V to answer so definitively about op amp sound quality

certainly makes me question the quality of the opinions

Mine is a recommandation that involves sonic compatibility between chips. The LT1358 is 'crankier' than the LME49725, so if the former works well, the latter is pretty much guaranteed to do too

Regarding supply voltages, they're both specified starting from +/-2.5V and the upper limit must be the same too.

Andrea: · 25th January 2010, 05:07 PM

Quote:

Originally Posted by Albinoni

Ok thanks for your reply, but quite surprisingly for eg why does alot of Opamp users such as Bio Science Geek and Bass Boost II use the Opa2227 amp and all swear by it, I mean to me it looks like this seems to be the most popular Opamp out there for CMOY amps.

You could try the TLE2062 which has better output current, FET inputs, lower power consumption, and warmer, nicer sound

25th January 2010, 01:49 PM	#1
Albinoni diyAudio Member Join Date: Jan 2010	Q re the OPA2227 Opamp I am planning to try a OPA2227 Opamp into one of my CMOY amps, and would like to ask some Qs re this opamp: 1. Whats the SQ like of the Opa 2227? 2. I have heard it sound close to a Tube Amp, is this true? 3. Is there much of a diff between the Opa 2227 and Opa 2228 and which one do you prefer ? 4. Up to how many Volts will the Opa 2227/2228 take ? 5. Whats it like on batt consumption ? Thanks

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25th January 2010, 02:21 PM	#2
wahab diyAudio Member Join Date: Nov 2009 Location: algeria/france	227/2227 is too slow, and the 2228 is no wonderfull thing either.. the latter has a few qualities, but nothing extraordinary, unless the price is very low...

25th January 2010, 02:23 PM	#3
Andrea: Banned Join Date: Oct 2009	I don't think the OPA2227 is too slow. I'd rather say it's too cold

25th January 2010, 03:05 PM	#4
cjkpkg diyAudio Member Join Date: Aug 2008 Location: Roswell GA	I recently replaced the opa2227 with the LT1358 and have been really impressed. Using it in a preamp feeding an LM3886 amp with fostex fonkens. While I still dont like it as much as my aikido, it is a very nice combination.

25th January 2010, 03:21 PM	#6
Andrea: Banned Join Date: Oct 2009	Try also the LME49725 with the LM3886

25th January 2010, 04:04 PM	#7
jcx diyAudio Member Join Date: Feb 2003 Location: ..	its interesting than no one needs to know the gain of your amp, the impedance, sensitivity of your headphones, listening SPL, or power supply V to answer so definitively about op amp sound quality certainly makes me question the quality of the opinions

25th January 2010, 04:05 PM	#8
Albinoni diyAudio Member Join Date: Jan 2010	Ok thanks for your reply, but quite surprisingly for eg why does alot of Opamp users such as Bio Science Geek and Bass Boost II use the Opa2227 amp and all swear by it, I mean to me it looks like this seems to be the most popular Opamp out there for CMOY amps.

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