Which is better,OPA4228 OR OPA404? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 19th February 2012, 02:17 PM   #1
diyAudio Member
Join Date: Dec 2011
Smile Which is better,OPA4228 OR OPA404?

I'm new here,this is my first post.

Resently,my friend gave me several chips,OPA404,OPA4228,OPA2132,OPA2134,OPA2111,OPA26 04,which have better performance?

Please,give me some ideas, thanks!!!
  Reply With Quote
Old 19th February 2012, 06:54 PM   #2
diyAudio Member
Join Date: Jun 2011
What do you want to do with them, at what source impedance, gain, and what supply voltage?
  Reply With Quote
Old 20th February 2012, 04:20 AM   #3
diyAudio Member
Join Date: Dec 2011
Preamp, supply voltage is +-15V
  Reply With Quote
Old 20th February 2012, 06:25 AM   #4
diyAudio Member
Join Date: May 2008
You could download the datasheets and compare the specs yourself. They are all good.

The audio performance depends on the circuit you use them in. If you design the circuit specifically for each op amp, you will notice little difference, if any. If you just use any circuit and swap the op amps without adapting the circuit to it, you will notice a difference. In that case you don't have an objectively good amp, but a subjectively good one, and that makes the classification a question of your personal taste.

You can not swap the four channel op amps (404, 4228) into the boards for the two channel op amps and vice versa, so you need at least two different boards for the test.
If you've always done it like that, then it's probably wrong. (Henry Ford)
  Reply With Quote
Old 21st February 2012, 01:32 AM   #5
diyAudio Member
Join Date: Jun 2011
OPA404 and OPA2111 both use the TI Difet process, which may possibly offer better performance out of the other FET input ones. If for moderately low source impedance though, my pick with be OPA4228, that is if you can work with a quad opamp and that the preamp has a gain > 5x.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
OPA4228 runs hot iron25 Solid State 2 1st July 2007 05:42 PM
OPA404 for hi end preamp Bem-bem Solid State 0 25th May 2006 12:36 PM
OPA4228 help needed afxdave Chip Amps 2 8th April 2004 04:25 PM

New To Site? Need Help?

All times are GMT. The time now is 04:35 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2