OS X System Equalizer

I don’t have a music collection to listen to using iTunes. I listen to music through online streaming services like Pandora and Slacker. The downside to this is that Google Chrome doesn’t have a built-in audio equalizer like iTunes. I have a decent pair of headphones, Audio-Technica ATH-M50, and the default line-out from an Apple desktop machine has always sounded a little “empty” to me. Like they slightly tweak it for normal/smaller headphones. Today I finally figured out how to get a global system equalizer for OS X (for free) so I can push the bass up a little to compensate for the “emptiness”.

These steps are done on a Snow Leopard iMac (10.6.7 specifically) but I’m pretty sure they would work on a Tiger/Leopard (10.4/10.5) machine as well.

First thing is to install Soundflower which requires a restart. It’s similar to Audio Hijack Pro in the fact that it adds virtual sound devices but without any other capabilities like recording/sfx/etc (and it’s freeware).

Next you will need AU Lab from Apple. It’s a bundled application with Xcode so either download it from Apple or install it from your OS X Install DVD if you don’t want to deal with the multi-GB download. According to NicolasBalan in the comments below, you can now download AU Lab standalone from the rest of XCode (you will need an Apple Developer Login though), go to the Downloads for Developers page and search for “AU Lab” to get it.

And that’s it for software requirements!

Step 1) Change Audio Output Device

Change the output device in System Preferences->Sound, choose the Output tab. You should see Soundflower (2ch) in the list of devices. Select that one.
OS X Sound Preferences

Step 2) Open AU Lab

Easiest to search for it in Spotlight or it’s default location is at /Developer/Applications/Audio/AU Lab.app
AU Lab Location

Step 3) Setup Input and Output devices in AU Lab

You’ll be prompted with “Document Configuration”, use the Factory Configuration “Stereo In/Stereo Out”. Change the Audio Input Device to “Soundflower (2ch)” and the Audio Output Device to “Built-in Output”. Finally, click Create Document.
AU Lab Document Settings

Step 4) Add EQ Effect

Under “Ouput 1″ apply the effect Apple->AUGraphicEQ
AU Lab EQ Effect

Step 5) Edit the EQ

Tweak like mad with 31 bands or change it to 10 bands to get an EQ that looks more like the iTunes one.
AU Lab 31 band EQ
AU Lab 10 band EQ

Step 6) Save your preset

The 3rd drop down from the left of the EQ window lets you save/change presets.

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  • http://goncalossilva.com/ Gonçalo Silva

    Thank you for this, wonderful tutorial!

    I have a doubt, though: Is it possible to have this loading automatically on boot? I need to do AU Lab steps every time…

    • dojohnso

      I’m hoping for the same. This is a fantastic utility.

      • http://www.dctrwatson.com John Watson

        On Snow Leopard, if you save the AU Lab document and add the document to your Login Items in System Preferences->Users & Groups, it will open automatically when you login.

        My current testing shows this does not work in Lion.

        • Thatslongformud

          Thanks for these steps, I’m using them daily!  Have you figured out a way to not have to recreate the document each time in Lion?

          • http://twitter.com/ryentzer Yentzer

            Same here. Sure wish I didn’t have to set up everyday. But it does make such a huge improvement in the sound, it’s worth it if needed.

          • http://profile.yahoo.com/RNJY5T25YIBCJQK7BPZEUNRRSM Sean

            Did you ever figure out how to get this to automagically load on login?

          • http://www.dctrwatson.com John Watson

            No, sorry. Never had any luck with that.

            If you do figure out a solution, please do let me know so I can update the instructions.

    • http://www.dctrwatson.com John Watson

      On Snow Leopard, if you save the AU Lab document and add the document to your Login Items in System Preferences->Users & Groups, it will open automatically when you login.

      My current testing shows this does not work in Lion.

  • Brian

    I’ve done this all and I have now lost my sound.  Any ideas as to why?  I know when I set to Sunflower (2ch) I lose it.  

    • http://www.dctrwatson.com John Watson

      If your system preferences have the Soundflower set as the output, you have to have AU Lab running with the above settings for your sound to work.

      • Brian

        Yep.  System preferences on Soundflower(not Sunflower as I previously wrote) and AU Lab running with the above settings.  And…..crickets.  no sound.

        • http://www.dctrwatson.com John Watson

          Whoa.. No applications can find a suitable sound device??

          I was just listening to Spotify yesterday too! Now I can’t either… I’ll see if I can’t figure out what’s going on

          • Brian

            I’ve already uninstalled it.  Going a different route.  Thank you for the help though.

        • http://www.dctrwatson.com John Watson

          Alright, I was able to fix this by restarting.

          Caveat #2: You cannot load the settings from a saved file anymore. You have to go through the AU Lab steps everytime…

          • http://www.facebook.com/people/Gabriela-Favre/1641142620 Gabriela Favre

            Hi,
            Do you always start a new document every restart?

          • http://www.dctrwatson.com John Watson

            It seems that way. I’m unsure why opening a saved document doesn’t work (on Lion at least).

          • berryp

            Did anyone find a solution to this issue on Lion? @dctrwatson:disqus 

  • http://www.facebook.com/people/Gabriela-Favre/1641142620 Gabriela Favre

    Hi!
    Thank you for this great solution!!
    One question: may I change Sample rate to 96000Hz in Audio MIDI Setup? Will that give more possibilities of getting a better sound when equalizing?

    • http://www.dctrwatson.com John Watson

      Glad it could be some help to you too.

      I doubt it would help. Unless the source audio is that high there will probably be no difference in audio quality. I’ve never tried it though so I can’t say for sure.

  • Xxx
  • http://www.tiremoni.com Michael Schroettle

    Great stuff. Thank you very much :-)

  • http://twitter.com/ryentzer Yentzer

    Perfect. Thanks!

  • Bill

    Great EQ. Anyway of outputting to an Apple Airport Express?

    • http://www.dctrwatson.com John Watson

      Try this: http://www.hersson.net/raopx

      Instead of setting “Built-in Output” in AU Lab, set it to “Soundflower (2ch)”.

      (I don’t have an AirPlay device to test this on)

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  • Todd Maroney

    OK.. I must be a complete Dolt, because I can’t seem to get this to pipe through to “Built-in Output”… I Don’t see a screen like the one you show in Step 3. Don’t have a “Factory Configurations ” Screen or preset for Stereo in/Stereo out… have to manually add one input and one output, setting Soundflower as source.

    Running Snow Leopard 10.6.8, current soundflower and current Xcode

    If I set the source in Sound preferences to SoundFlower 2CH, and set up a new profile with Soundflower 2CH as source, I can see the EQ bars illuminating in AU Lab when playing sound through from Pandora, but no sound comes from headphones.

    Help the monkey flip the switch please…

    • Todd Maroney

      Nevermind.

      It’s called “software update”… there was a patch for Xcode to get the screens you posted…

      ###Wears @sshat for the rest of the day###

      …and the monkey flips the switch@

      Thanks for the tutorial!

  • Martin Bitar

    Hey! 
    Wonderful tutorial! Everything sound better now. :)

    Do you know about a place where I can see “standard equalizing” in 10 and 31 bands? Whats normal for rock, pop, and other genres? I feel like I have to do everything by my self, even though I have no experience on equalizing. 

    • http://www.dctrwatson.com John Watson

      I think the equalizer in iTunes is a 10 band equalizer. Its presets would probably be a good starting point that you can tweak to your own preference.

  • Claus

    Hey! First of all “thanks for posting this.

    I have set everything like shown in the tutorial, see the input in AU Lab-Plugins but cant get anything to hear from my iMac. (tripple-checked all settings)

    Anyway I would prefer to listen to it through my motu8pre, but this also does not work. The basic idea of beeing able to EQ system-sound though appears fantastic to me.

    Is Soundflower something like a plugin-slot, signal flow like: system-audio insert IN -> soundflower input -> Au LAB -> Soundflower output -> system audio insert out?

    Would really love to get this work (.-) thanks for help in advance.

    Claus

  • Jas

    Hi, thanks for the great tutorial. It worked for me all this while until I’ve upgraded to Xcode 4.3 where the AU Lab was upgraded as a result. It doesn’t work now unfortunately. Was wondering if you are able to provide the instructions on how to set it up in the latest version of Au Lab that came as part of Xcode 4.3? Thanks.

    • ln_zero1

      It works well with the Xcode 4.2.1 and AU Lab 2.2.1 maybe trying the 2.2.1 binary of AU Lab… i can send it to you

  • Matthew Peterson

    Thanks for the help, but whenever I do this, an irritating buzzing comes out of my speakers along with the sound. I have a feeling it may be because I set my output to Soundflower, and in AU lab, I have it the output set to Built-In Output(Which, if I’m correct, is the system setting for output, which we’ve selected as Soundflower). Oh, also, a note: I’m trying to also send the audio through a connected set of speakers. I’m on a MacBook, so there’s only one audio port unfortunately.
    Any tips on how to fix the buzzing?

    • Michael

      Try restarting the applications playing audio once you’ve changed the settings. That worked for me when I had Spotify buzzing and once I restarted it to stream music, the buzzing was gone. Consider it a reset for your app to know the correct output.

  • guest

    seems as though this doesn’t work with lion

  • Phil L.

     I installed both AU Lab and Soundgarden and got it to work, but right away realized that the sound had suddenly become overall distorted and pretty much sounding like a low bit rate MP3 even with flat EQ.  I had just installed “Hear” about 30 minuted prior to try and do the same kind of EQ function and can’t remember if the problem started then.  But I uninstalled all 3 problems and my sound is still messed up on just the Mac OS portion.  Switch over the Windows on the partition and it is fine. Getting the sound back to normal is super important for this computer. Any tips?  Thanks so Much!

    • Phil L.

       Think I figured it out, appears that Hear is/was the problem.  Really hope reinstalling and uninstalling Hear fixes it.

  • danheberden

    Another way that works with Lion and is pretty simple is AirFoil – you can pipe audio to remote devices but also the local computer and the software has an eq. 

    • Jens

      But this has a high latency which render it unusable for skype calls.

  • Jackshell

    I paid a premium price for a Mac. Why should have to go thru all this and hope it works.  Hey Apple are you listining?????  I want an equalizer! Can’t be that expensive to include in the software.  And also as how bout a basic draw program……..

  • NicolasBalan

    …Wow… …Thanks a lot, the sound is amazing (much, much better-the bass is killing me)… …What we would do without people like you… …Just one suggestion to new comers… …They can download AU Lab separately (7 Mb) … …Is not necessary to download Xcode (4.5Gb) from Apple…

    • http://www.dctrwatson.com John Watson

      Updated the instructions, thank you

      • NicolasBalan

        …I came back after 9 months to check something else, I was surprised to see that you mention my name… :)

  • sojournerC

    awesome! thanks

  • Matt.

    Thank you for this, so – so much.
    <3

  • Kevin Coulter

    Thank you! Thank you! Thank you!  As someone with over-the-ear hearing aids that don’t pickup headphone outputs this is amazing.  My hearing loss is pretty frequency dependent, mostly in the voice range.  To finally be able to bump that range up when listening on headphones through a browser is great.

  • http://www.facebook.com/blackxthink Dave Grenier

    Awwww yeahhhh it’s working ! finally bass in my beats by dre which sounds almost totally flat otherwise thank you thank you

  • Ignacio

    im sorry its just not working for me i dont have the two options for output and input settings maybe i have to old of a mac 10.5.8

    • ArchiePonsonby

      No. I’m running 10.4.11. Works great but initially I’ve found it to be very unstable although it seems to stabilize with use. Odd!

  • Ryan Iyer

    Sir, you saved my life. This is amazing. After EQ, my viewing experience increased exponentially in awsomeness.

  • joe f.

    What you need is a DAC or DAC/headphone amplifier. Then you’ll get better sound, not just juiced-up sound.

    • haruspex

      I’m using the FiiO Alpen E17, it’s an amazing USB DAC/Amp
      I have my Beyerdynamic DT 770 Pro headset plugged into it

  • http://www.facebook.com/people/Chris-Brown/1269427628 Chris Brown

    What about if you are running an MBOX MINI it shows it in the devices but I get no sound or signal going to AU LAB

  • David

    this….this is the FUCKING shit. Ugh… jamming the fuck out right now!!!

  • TonyG

    Wow…big difference!

  • Rory

    Simply Brilliant

  • Tryzub

    I can confirm this works with Soundflower v1.6.5 (released within the last 24 hrs) and Mountain Lion. Thanks for the great info!

  • http://www.facebook.com/profile.php?id=694282177 August Young

    How a i use this with pandora and then send it to my airport express via airfoil?

  • Mang

    I did this and the sound was great….but the volume went way down. Tried to bounce the format up to 96000 Hz, but that didn’t fix the issue. Swap back to standard Built-in Output w/ 96000Hz, and it damn near made my ears bleed, but lost the equalization…suggestions?

  • numnutz2005

    you can also have this run on startup since whenever you reboot it makes ur sound not work again until you open your preset. You just go into accounts in the settings section > select the account you use > select login items > click the plus sign to add something > nav to wherever your preset is saved to and then put a check mark on it after its added to the startup items list. Restart your PC to verify that its working and your good to go :). people probably knew that already but figured if someone didnt like me this would help them out along with the info on why the sound isnt loud when using the virtual in/out like it is on ur speakers. ty so much for this guide though i really needed it cause it was drivin me nutzz….windows allowed it by default but apple doesn’t….but no ne moreeeeee hehe. ty again!

  • Marcello

    I have been trying to get this to work but every time AU Lab starts processing the audio, i get a persistent buzzing sound which i just can’t figure out. Does anyone have any idea what is causing this / how to fix it? Thanks!

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  • Erik

    I’m running Mountain Lion and goddamn does this works great! Every single audio input (iTunes, Spotify, YouTube, etc.) is equalized at exactly the same frequencies… simply brilliant!

    Now, I’ve tinkered with the ‘Login Items’ setting and so far I haven’t been able to get AU Lab to automatically start up and play my EQ document at Login, but I have narrowed it down to a one-click affair (with that click being the AU Lab icon in the dock). Because even though I have both the AU Lab app and my customized EQ document added to the Login Items list, Mountain Lion doesn’t seem to want to completely launch AU Lab at Login. Not exactly a big deal, but it would definitely be cool to have all of this start up on its own upon User Login.

    If you find a way to make this process completely automated upon Login, please let me know!

    Otherwise, my means of getting all of this to the point of being a one-click process at Login was to not only add AU Lab and my EQ file to the Login Items list, but also by going into AU Lab’s “Preferences…”, selecting the “Document Settings” tab, and then by selecting the “Open a specific document:” setting in the “When Launching AU Lab:” and choosing your custom EQ “.trak” file.

    Thanks again!

  • Erik

    Not sure if this has been mentioned before, but on the matter of a lack of volume when going through AU Lab, all you need to do is go into “Preferences…”, select the “Devices” tab, click the drop-down arrow next to “Expert Settings”, and then select “Edit Device…” at the bottom. This will take you to a program called “Audio MIDI Setup”, and should open right up to the “Built-in Output” window. Once here, you’ll see that the default output levels for both channels are quite low. And so all you have do is bring those up a bit. I’ve set mine at a value of .711 / -9 dB and the volume seems to be quite sufficient. You can also bring the levels up by selecting the “Soundflower (2ch)” tab and bringing up the output levels on both channels there as well. I’ve set mine at a value of .902.

    NOTE: Always remember to keep the volume levels on all of your audio input software (iTunes, Spotify, any internet source) around 90% or less. This prevents the frequencies from maxing out and getting distorted.

    • RS

      Gold star for Erik!!!

      ["NOTE: Always remember to keep the volume levels on all of your audio
      input software (iTunes, Spotify, any internet source) around 90% or
      less. This prevents the frequencies from maxing out and getting
      distorted."]

      Man, that was just the solution I’ve been looking for. After wracking my brain for months because I had quite a bit of distortion, in certain tracks especially, I just kept taking it out with audio effects. What a pain! Of course your solution is much simpler and much more effective so thank you Erik, I can now stop beating my head against the wall.

    • Ben

      Nonono on your “NOTE” If you send a 90% signal, then your signal is being shaped by the specific software app you are using, and not by a potentially nicer device, like your A/V receiver, for example. Plug your Mac into a DTS-capable receiver with an optical cable (for those that still have them). Select “digital audio” at your output source. Set your iTunes volume to 100%. Play a DTS-encoded WAV or Apple Lossless file, and your receiver will see the signal and output the encoded DTS signal, even if it’s high-res and surround sound. As long as it has been encoded as 44.1/16 DTS, it will play back in digital 4 or 5 or 6 channel DTS perfection. Now click back on iTunes and drop the volume from 100% to anything else…your DTS signal will break, and you will get horrific static sounds.

      Set iTunes volume to 100%. For an analog system, set system volume to the level you want if your output device (speakers or whatever) lacks its own signal. Mac OS and its apps don’t ‘overdrive’ the analog audio output. The only time you really need the software volume adjustments will be if you’re using the built-in speakers, or headphones.

      iPhones and iPods are different…they are ALWAYS messing with the signal, and you need to set them lower to avoid clipping in most cases.

  • Huib

    great!!!!

  • http://www.facebook.com/samuelbgale Samuel Gale

    HOLY FUCK! SOUNDS AMAZING. THANKS MATE

  • James

    do you need to be a developer to get the app, i am hesitant to create a developer profile because i do not do any of that

  • demien

    using ios 10.7 and it works like a charm! just add it to your startup like discribed, and use dock dodger so AU lab doesnt show on your dock all the time.. Works perfect and the sound quality improves dramatically!!

  • Jules

    Works a treat! Hardest part was waiting for email from apple developer to complete set up.

  • haruspex

    For those without a developer account, I’ve hosted the dmg for AU Lab here:
    http://www.mediafire.com/?shfszmd722i2ykz

    MD5 (au_lab.dmg) = 5a82350c546ef5be778e5aeb861f9c94

    Those with a developer account can confirm this MD5 hash:
    http://osxdaily.com/2009/10/13/check-md5-hash-on-your-mac/

  • http://www.facebook.com/woutersmet Wouter Smet

    Wonderful, thanks! Note that you can add other effects beyond the equalizer in AU Lab (for example AUPitch) for loads of (silly) fun :)

  • http://www.facebook.com/profile.php?id=100000024771582 Carlos Carver

    Airfoil is brilliant for playing to my airplay speakers from Spotify etc.
    Many thanks

  • http://www.facebook.com/richard.splendid Richard Splendid III

    somehow I seem to lose all the range I had controlling the volume via my F keys, turning down completely still kills the sound but turning it up the range is maybe 8db. did I do something wrong. any ways around that, because the sound is ace…

  • Guest

    It worked great with my MacPro built-in speakers but I couldn’t get any sound to my headphone. Did I do something wrong? Help.

  • HZ

    This REALLY did not work for me. AU Lab crashed constantly, and I couldn’t access my bluetooth speaker [Brookstone Big Blue Live] at all until I restarted my computer for the third time!

    Running
    10.6.8
    Macbook Pro
    intel core i5

    Had to get rid of Soundflower as well as it froze and shut my computer down.

    When I tried this tutorial for my macbook’s built in speakers I could change the output a bit, but completely useless when trying to access my bluetooth speaker.

    I’m assuming there is something I’ve done wrong here, but I can’t figure out what.

  • Peter Weil

    Where has this thing been hiding all this time? This is fantastic! Thank you so much for posting this!

  • Matthias

    Awesome tut, thnx! The sound of my headphone is amazing now. But there is one downside though… The sound out of my laptop speakers is quite low.. I have already turned up the volume to the 0 mark (witch adds 4,5 dbs). But it’s still not the same as it was before. Does someone know how to fix that? Thnx

  • Chewy

    how is it you use an EQ you make on a regular basis? Does AU Lab need to open for it to be used or not?

  • Don Pietro

    Hey guys quick question: Could the preset be saved to the computer itself? I find that I have to open “AU Lab” to hear anything (leaving Soundflower (2ch) as the output in the system pref)? Don’t know if I did something incorrect or just ignorant about the subject, if anybody could awnser me this question I would greatly appreciate it. Pietro.

  • Philip

    Hello guys, I am really glad I found this site.

    I experience a problem though. I am probably just inexperienced but the problem for me Is that I use a “Dac” via USB. It works as a sound-card and I have to use it as output in system preferences otherwise I cant listen from my studio monitors.

    If I do as you explain in the guide I only get sound from my lousy built-in speakers.

    Is there anything I can do? Would really appreciate any help

  • ito

    Seems like it does not work in Lion… No sound at all :(

  • Frank

    Great guide worked well on my mac. (OS X Mtn Lion).

  • Kai

    I am able to get the EQ to work, but I have to do everything over each time I start up my computer. I’m not sure why the audio is not coming through, even though AU Lab is opening up the .trak file at login.

    • Alex

      Maybe it’s because you still need to switch the audio output? This can also be done at startup if you write a little apple-script which will do this every time your computer boots. (I can provide code if needed)

      • Kai

        Could you please provide me with the code? Much appreciated!

  • Andy

    I’m flabbergasted at all the problems people are having with this set up. I followed the instructions and voila! Works a treat! Thanks mate…AS

  • R.CH

    I got this to work alright but how do I get this work with my Apogee Duet? Mac built in sound card is crap. Tried tinkering with AU Lab input and output and still get nothing but feedback loop. Somebody explain please…

  • arizidon

    Mechanically the above all works as advertised. Thanks. But the quality of the music coming out my speakers with this add in was noticeably degraded. Too bad the idea is great!

  • qriusme

    Works fine on my Macbook Pro on 10.7.5. Thanks for this and to the commenters who left valuable info. I’m finally rockin’ some bass on my earphones.

  • david

    Works perfect. Mabook pro on 10.8.2… putting my subwoofer to work!

  • Moped

    This is awesome thank you!!

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  • bsd

    Wow, thanks! I’ve got the same configuration with the same cans. After this, they sound great. Thanks for the tip! DnB sounds amazing now.

  • Alex

    Hey guys! This works perfectly, thank you very much!

    The problem is that I’m at university, so I frequently switch between the soundflower and the built in output. Doing this at least four times a day and being a rather pragmatic person, I’ve written a small os x app that inserts a menulet in the menubar at the top, from where you can easily toggle the equalizer on and off. It automatically changes the audio output and start/stops AULab.

    I don’t know what would be the best way to distribute this app, but if some of you are interested, reply to this post and we’ll come up with a solution ;)

    • Preston Marshall

      Throw it on Github bro, like everyone else. Make a downloadable zip or something, and go ahead and publish the source too.

    • Clark James

      I’d love that program- if you haven’t hosted it anywhere comment me back and I’ll give you an email address to send it to

    • Roe Nerem

      I am interested in the menulet/app, did You ever publish it?

  • http://www.facebook.com/daniel.james.wiltshire Daniel Wiltshire

    Just did some A/B comparisons between the default Mac OS X output and the Soundflower output with a flat EQ for quality comparison. I can honestly say I couldn’t hear any quality difference whatsoever (which is a good thing for those who are worried about the actual audio being affected!) Thanks so much for this guide. Works great on Mountain Lion 10.8.3! Using it to lower the bass from a pair of Kef Q500s in my bedroom!

  • JoseVuervo

    Works like a charm in 10.8.4, superb!

  • Mike

    When I try to apply the AU effect I can’t find the apply the effect Apple->AUGraphicEQ…any ideas?

    • Mike

      Do I need to login with my apple ID or something?

  • FitzpatrickPhillips

    Damn this amazing. Thanks man.

  • Holly

    I’d love to be able to get this going, but my AU Lab crashes every time on startup. :( I haven’t been able to open it. I’m running OS 10.5.8. Does anyone else have this problem/know how to fix it?

  • Soundblastdj

    AU-Lab can also be downloaded from http://www.apple.com/itunes/mastered-for-itunes/ without any dev logins

  • rob

    Ok, this is a 2-year old thread, but I’ll post my question / issue here. First of all thanks for this great tutorial. Been using AuLab and Soundflower this way for about 10 months and it sounds great.
    My issue is with the fact that every time I restart AuLab (on reboot, for example), the AuLab Output goes to “Soundflower” instead of “Built-in Output” and I have to press Command+Shift+I to get to the “Studio” panel and manually set the output back to “Built-in Output”. Even if I save the trak preset afterwards, it still doesn’t seem to remember this setting upon restart.
    Does anyone else experience this? If so, is there a solution?

    • Leo

      This is exactly the problem I am having with a 3 month old MB Air running 10.8.5, but works great on an old iMac 10.6 machine. I can’t get AuLab to save the Output to ‘Built-in Output’. Seems to work fine if I set it, but this is such a pain.

  • alexanderloginov

    Hello! I have some problem! Can you help me?
    http://www.youtube.com/watch?v=59gM547S61­c

    MacBook Pro (mid 2012). OS X 10.8.4
    Soundflower – 1.6.6b (https://code.google.com/p/soundflower/)
    AU Lab (http://www.apple.com/itunes/mastered-for-itunes/)

    All done, working, nice clean sound. The next day I turned on the laptop, and the sound come out with noise. Completely removes all installed again, nothing helped.

    Who knows what the problem is? Help! Thank you.

  • Chris Kerr

    Hoping someone can help me…. I’ve followed the instructions, but I’m not getting any audio out.

    My Setup:

    MacBook Pro Retina on OS 10.8.4
    USB DAC/Amp – Audinst HUB-MX1
    Headphones – Sennheiser HD650
    Audio Source – Pandora via Chrome (28.0.1500.95)

    I’m trying to set the Soundflower 2ch Audio device to output to my USB DAC/Amp. The DAC/Amp isn’t receiving audio through the USB port at all (there is a light on the front that tells me this)

    If anyone has any advice I’d be very grateful indeed.

    Thanks!

  • Bas

    I followed the procedure, and I’m able to tweak the sound. Although the output volume is very low. I raised the volume of the master and output 1 in AU Lab and of course also the OS X volume. The volume increases a little, but it also distorts. It doesn’t distort when I use the normal Apple settings. Does anyone know how to increase the output volume, without the distortion.

  • http://sikosis.com/ Sikosis

    I get that weird buzzing noise as soon as I setup AU Lab. I tried what was suggested, i.e.. close it app down, restart but same issue buzzing issue :(

    • http://sikosis.com/ Sikosis

      I set it to Soundflower (64ch) instead of Soundflower (2ch) and the buzz is gone !

  • Vorian

    I finally got it to work for me but there seems to be a doubled audio effect. It sounds like a flanger or chorus effect. I can’t seem to mute one without affecting entire audio.
    Can you help?

  • Vorian

    I hear a doubling of the audio. Where is it coming from and how can stop it?

  • darius

    Hi all.. This is great!!! Let’s me lift up bass around 40-50Hz to make my KefQ300 sound much better.. would be great to have an app on iPhone/ iPad to remotely control EQ settings. Does something like that exist?

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  • Tom

    Works perfect, thanks for the great info. Unfortunately I dont want to use it with my built in output. So I select my USB soundcard instead of ‘Audio Output Device to “Built-in Output” and AU lab ceases to show an input or output.
    Any suggestions?
    Its an M-box mini and 10.6 OSX

  • http://www.pibby.com/ Katie Harron

    Works great in Mavericks 10.9 as well! Thanks!

  • Cort

    Does anyone have a problem with the audio engine overloading upon waking from sleep? It’d be great to not restart AU labs everytime my machine sleeps.

    • Larissa

      This happens every time I wake my computer as well. It started when I installed 10.9.

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  • Erling Christian Hoff Wikborg

    Awesome! Exactly what I was looking for :D I love a little extra bass, and have been looking for a way to get it a long time ;)

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  • jack

    “The downside to this is that Google Chrome doesn’t have a built-in audio equalizer like iTunes” you sure http://lab.ejci.net/Chrome-Audio-EQ/