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iRig + iPad = Guitarist (Musician) Heaven

The Problem

Amp simulation apps have existed for a while on iOS, but the problem has always been getting the guitar signal into the device and hearing the subsequently amplified output.

Using the built in microphone, or the headset mic, has always meant not being able to hear the output if you were using an acoustic guitar. For electric guitar, not hearing an output at all is a problem, as plugging a device with audio input into the headphone jack mutes the built-in speaker.

The Solution

So the only way to do this effectively without a USB 'hack' is through a hardware device such as the iRig from IK Multimedia. This handles the audio input and importantly provides an audio output or monitor via a standard 1/8" headphone jack.

Plug your headphones into this output for quiet practice without disturbing anyone else, or connect it to speakers, a sound system, a guitar amp or even a PA system for full-on live sound.

We had no problems at all connecting a guitar straight away and after confirming the warning about turning down the volume before we start, especially with headphones connected, we were off and rocking (well, we made noise with our guitar).


Using iRig with Apps

The iRig was recognised as an input device by every app we tried without fail. This included iPad specific apps Amplitube for iPad (look out for our review soon), StompBox and StudioTrack (read our full StudioTrack review here).

We also tried iRig with a number of iPhone audio apps including:

A Few Issues

For the most part there were no issues with iRig and the above apps, the only problem we did have was with AmpKit by Agile Partners and Peavey. The main issue here was high pitched feedback at anything but extremely low input levels.

This is not a review of AmpKit, that is for a future post, but the extremely high gain Peavey amps simulated in AmpKit are a particular challenge to iRig, and Agile Partners recommend, of course, their partner Peavey's AmpKit Link audio interface.

This is a hardware device designed for exactly the same purpose as iRig, but with active (battery powered) circuitry designed to eliminate the feedback inherent with the unpowered versions like iRig.

We hope to get a review to you soon for both the AmpKit link and AmpKit app, but we have been holding out for an iPad specific version, which is apparently in the works.

Sidenote: Feedback Warning - Follow the Instructions

As we mentioned above, feedback with these kinds of devices can be a problem due to impedance issues. The scant instructions give just the essentials for setting up the iRig, but they do warn that using a 1/8" to 1/4" adapter on the headphone output will cause audio feedback.

Well, we wondered about this and as we only had the 1/8" to 1/4" adapter available to us, we tried it anyway.

We had no feedback issues with this adapter when connecting to a home cinema surround sound amplifier, but once we connected the iRig to our guitar amp (clean channel, no effects, middled tone controls across the board) and engaged a high gain amp model in the software, specifically the Metal amp, we had an immediate problem with piercing audio feedback screeching out from our amp speaker at any volume setting.

Our recommendation is to take heed of the instructions and get a cable matching IK Multimedia's suggestion. We are guessing that similar feedback will be experienced with a PA system too (although we have not been able to test this).


As you can see in the above instructions, the cable setup recommended is an 1/8" stereo connector from the headphone socket out to a twin RCA (using the left one to connect to the amplifier/PA) or 1/8" to 2 x 1/4" Mono jacks.

We obtained one of the latter cables from eBay for about £4 (pictured below) and since using this new cable we almost never received feedback when using the iRig connected to the guitar amp, except in the situation mentioned above with the AmpKit app.


Not Just For Guitars

Whilst the primary purpose of iRig is to get a guitar input into your iDevice and a monitor out, you can also use it to input other audio signals. We successfully recorded audio from a Bass guitar and a passive vocal microphone (although audio hiss was an issue) as well as an Acousto/Electric guitar from both its 1/4" and XLR output. IK Multimedia's website also makes mention of line level input from Keyboards, Synthesizers and mixers and we have no reason to doubt it works with these audio sources too.

We have had a great time using and testing the iRig interface and we can recommend it wholeheartedly for iPad musicians or anyone wanting to get sound into their iDevice whilst monitoring the output simultaneously.

iRig is available from most music stores and online retailers for around £25 ($39.99).

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Reader Comments (11)

Thanks so much for clearing that up for me!
I just bought an irig and almost sent it back because of the feedback issue.
I had also used a 1/8 to 1/4 jack for my headphones.

Guess I should have read the instructions first... :-/

Oh well, typical male...

January 14, 2011 | Unregistered CommenterDBAG

@DBAG You're welcome, glad we could help, it took us a while to read the instructions too! ^_^

January 14, 2011 | Registered CommenteriPad Creative

How did you get on with the eBay cable having 2 x 1/4" Mono jacks when your guitar amp has only one input? Where did you plug the 2 mono jack inputs into?
I can get a 1/8" stereo to just one 1/4" jack mono cable and wondering if this option might work?

September 4, 2011 | Unregistered CommenterCptrossco


Well actually the processed sound coming from things like an iPad or a guitar port, etc. use frequencies that most normal guitar amps can't handle. You're actually better off plugging the iPad into headphones or a stereo system. There is a guitar amp that was actually designed to handle the processed sounds, the atomic reactor. It is just a dry valve tube amp and speaker with no effects. If memory serves me right it also has the right/ left RCA plugs you are referring to.



September 4, 2011 | Unregistered CommenterDbag

Just got an IRig yesterday, plugged it into my IPad and headphones and listened the samples from Amplisound2 But when I plug in my Electric Bass, I get no sound. The tuner works but I get no guitar sound. Any ideas?

September 8, 2011 | Unregistered CommenterJimmyjam

Sup jimmyjam,

Did you check out the settings in "setup"? Maybe try turning off the feedback thingy.
Or the volume sliders?


September 8, 2011 | Unregistered CommenterDbag

I am curious about this. My setup was a a cable that had a stereo "1/8 on one end and a single "1/4 on the other end. I guess it bridges to mono inside the chord. Bad screech feedback that I don't get when I plug in headphones. In your example you show the stereo "1/8 going to TWO mono "1/4s. Is that important?

March 1, 2012 | Unregistered CommenterBrian Hamner

Hi Brian - from what I understand, this was key to avoiding the screeching feedback. I tried the setup with a similar cable to the one you described first and got the feedback, so I bought the 1/8" to dual 1/4" instead. - Phil

March 1, 2012 | Registered CommenteriPad Creative

You explained the topic very well. The content has provided meaningful information thanks for sharing this.

March 23, 2012 | Unregistered CommenterP A Sound System

Has anybody noticed that Apple does not use the "industry standard" spacing on their iPhone 3.5mm, 4 element, headphone jack (which is a stereo audio/mic connection)? MOST OF THE PROBLEMS ABOVE MIGHT BE CAUSED BY THAT.

This means that when you fully insert the iRig connector to your iPhone you will "sometimes" be disconnecting the mic. If you slide the iRig connector out slightly (you've got to play with it) you'll get the right connection - you'll know because the stereo audio will become a little more faint, as the mic becomes activated. I use a thin tape wrapping at the base of the iRig's male connector shaft - that prevents the plug from going to far.

Take a look at your iPhone headset 3.5mm, 4 element plug compared to the iRig 3.5mm, 4 element plug - you'll see what I mean - the plastic insulation spacing is slightly different - Apple, only Apple would use a non-industry standard plug. BTW, your iPhone headset works perfectly with the AmpliTude App.

April 5, 2012 | Unregistered Commenterbeepee
I like to know your answer/s to cptrossco question in capital letters...

How did you get on with the eBay cable having 2 x 1/4" Mono jacks when your GUITAR AMP HAS ONLY ONE INPUT? WHERE DID YOU PLUG THE 2 MONO JACKS INPUT?
I can get a 1/8" stereo to just one 1/4" jack mono cable and wondering if this option might work?

September 4, 2011 | Cptrossco

August 12, 2014 | Unregistered CommenterJun Directo

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