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How do I connect my electric guitar to my iMac?

I did a search and could not find a simple answer?

Could someone post a link to what kind of adapter I need to buy to do this?

I want to record using the effects in GarageBand.

Thanks in advance for any help!

20" iMac 2.16, Mac OS X (10.5.6)

Posted on Jan 31, 2009 6:16 AM

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Posted on Jan 31, 2009 6:42 AM

I was in the same boat as you, but after much searching for info and a lot of trial and error I finally got it set up. You need an "Audio Interface," which is a box that plugs into either your USB or FireWire port on your Mac. Your guitar plugs into the audio interface as well as a microphone and headphones (if you want). You then have to go into the GarageBand preferences and under the Audio/Midi tab set the Audio Input to your audio interface device (mine is an M-Audio FireWire Solo). GarageBand should automatically recognize your AI device and list it in the Audio Input menu. Also, set the output to Built-In Output to have the sound come out of your Mac's speakers or any speakers you have plugged into you Mac. THEN you select the amp you want to use in GarageBand, double click on the amp's image to make it spin around and reveal the amp input settings. You may have to play with the Input Source settings to find which one works for you. I set mine to "Mono 2 (FireWire Solo Multichannel)". And make sure the Monitor setting is set to On or On with Feedback Protection.

Then you should be in business! Good luck and happy playing.
40 replies

Feb 24, 2009 7:47 PM in response to Christoph Drösser

Christoph Drösser wrote:
Okay, the cable might be good, but I don't like the way they advertise it: "... makes it even easier to plug in, play and record right away — without the need for complicated and far more expensive hardware and software". It's just a cable, and it does not replace an interface.


I avoid buying cables from Monster. True, they sell some decent cables and are widely distributed. However, their prices are often unjustifiably high, and - beyond that - I'm not comfortable rewarding their corporate shenanigans (politely put) with my money.

For better quality cables, I prefer Canare or Mogami. Canare is my favorite.

For cheaps, there's always things like house brands at Guitar Center or for really low prices www.monoprice.com

But for me... Monster... no no no! No no! No no no!

Feb 25, 2009 1:43 AM in response to Christoph Drösser

Thanks for the advice. I went to Radio Shack and picked up their cheap $4.00 adapter, and it works great. Glad I didn't spend the extra $$$ on the Monster since this baby will do me fine!
User uploaded file
This is what I got. You can find it online at this link:

http://www.radioshack.com/product/index.jsp?productId=2062467

It is Radio Shack Part # 274-366 - 1/8" Stereo Male to 1/4" Stereo Female - $4.39 plus tax

To get it to work, first I plugged my guitar cable into my guitar and the the adapter. I had to push it in kind of hard, until it went all the way inside the adapter and snapped in. It was awkward at first - it seemed like the guitar male end would only go in half way into the female adapter, but like I said, a little force worked good. I then plugged the male 1/8" end in the audio input on the back of my iMac (not the headphone output.)

Then I started a new project in GarageBand and chose Electric Guitar. Then I went to "Track Info" and chose the amp I wanted, then on the top right of the picture of the amp is this little button that says "Edit" - I clicked that and then clicked on the picture of the amp. on the screen below I chose "Source - Mono 1 (Built-in Input)", "Monitor - On with Feedback Protection", and I turned the Level up about halfway. Then I clicked "Done" above the picture of the amp and everything worked peachy. I mention this here because it took me awhile to figure it out, so just in case anyone else is reading this it may help them. My apologies to those of you who already know how to set it up.

I've played all night (haven't played in years) and now my fingers hurt, but I gotta say - this is FUN!!!

Thanks again to all for your helpful comments.

Feb 25, 2009 2:57 AM in response to Paul in LA

{quote:title=Paul in LA wrote:}{quote I had to push it in kind of hard, until it went all the way inside It was awkward at first - it seemed like the male end would only go in half way into the female, but like I said, a little force worked good. this is FUN!!!


Sounds like it was!

(sorry, couldn't resist, I'm still 12).

So, basically, after 3 pages of interesting exchanges we end up with the same answer that was posted at the beginning (several times).
But the value lies in the journey, does it not?

May 14, 2009 8:48 AM in response to isteveus

Man, I've read this whole post, went to all the links and still can't get my electric guitar to play make a sound on the MacBook. Actually I'm trying to figure this out for my daughter's boyfriend who is a great guitarist, better than I ever was, but I do understand how the strum the strings. He did go to radio shack and bought an adapter. It seems to plug in good and got it plugged into the mic plug and did the input source in Garage Band. I mean I don't even get feedback. He has 4 different chords and I've tried them all, they work with his amp, so it's not those. Just wondering if there is a answer here that I just can't find. I have searched honest.

How do I connect my electric guitar to my iMac?

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