Equalizer for OS X (for all apps on Mac, not just for iTunes)

We’re all know that our beloved OS X come handy with iTunes, it has equalizer!!! (a bit hyperbolic here, :) ) 

But, how about watching HD video on Youtube? Yup, we don’t have EQ set for that, also for Quicktime, and practically anything, … 

Of course we could buy the EQ system for that, 

But, there’s a free workaround for that 

Here we go: 

Install AU Lab, previously is part of XCode, now can be downloaded at https://developer.apple.com/downloads/index.action#

Install SoundFlower from https://code.google.com/p/soundflower/ got 1.6.6b version, restart the mac

Alt-clickthe speaker symbol and choose soundflower as output device

start Sound Flower 

choose audio setup right clik soundflower and click “use this device assound output”

richt click Soundflower again, this time choose ‘configure speaker’

choose multichannel, choose stereo, click the round-rectangle area, done

Start AU Lab, all the way around till got this one

doubleclick the output1, make sure it use soundflower

then click ’show device preferences’, set to soundflower

done

now you can add effect like EQualizer, timeshift, echo, whatever and it’ll affect general sound of OS X