Line6 JM-4 Looper


  • Killer Jamtracks: Vibrant, pulsating Jamtracks which were recorded by the A-list of studio musicians
  • Metal, Classic Rock, Blues, Funk, R & B and more
  • Multitrack loop recording (24 minutes loop time)
  • Ideal for recording, songwriting and performing at home or on stage for guitar and vocals
  • Many famous line 6 sounds
  • Over 250 artist presets
  • 150 Song-based presets
  • 12 Original line 6 amp models
  • 7 Guitar effects and vocal effects
  • 36 Programmable presets
  • Endless Jam (each Jamtrack can be played as a loop)
  • Incl. PX2 Power Supply (Art. Nr 140496)
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Factory Demo 
  • Factory Demo

Further information

Effect Types Looper
91 customer ratings:
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  • 4
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  • 1
4.2 / 5.0
  • handling
  • features
  • sound
  • quality
47 written ratings Read all reviews

All in one

Anze, 29.05.2013
This is a perfect all-in-one product for people, who would like to be creative. This looper is far more then just a looper. It also has Mic and MP3 player input options and it can also be used as a multi-effect on the floor if you are in a need for some effects (but the sound of it is not like analog one, so take that in consideration).
I use it primary for recording my inspirations and that can be done pretty easy. Looper has a lot of pre-recorded drum beats and it is pretty easy to dial in perfect BPM, but the down side is that it drums all the same, which can be a little tricky if you would like to record your own song from the start till the end. Sound quality is really near perfect (it doesn't sound like tube amps, but other then that it sounds perfect), recordings are in really high quality, you just need to read manual to be able to convert it from Looper to WAV and put it on the SD card (which I advice you to buy relatively large=due to firmware limitations on this looper).
Looper is build like a tank except buttons could be less plastic as it could be used as a multi-efect and you would step on it, it seems that they could be broken pretty soon...
Also some efects (Flanger/Delay/Echo and other on this two buttons) could be separated as they can be needed at some time separately...
The downside is also if you are playing with MP3 song in the background, that song is not recorded, just your playing and you can not undo multiple recordings of same songs backward, only two trays are possible at the same time or you have to save it each time (which is very simple) to have more layers of the song...
I would very recommend this product to people who would like to be creative and to technically be on time while playing a song (I improved my playing style with this looper)....
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Jams? Soli train? - To buy!

Flo P., 02.11.2009
The Line 6 JM4 is a product of the top class. Who is on line 6, is exactly right here. Whether at home in the middle of the night over the headphones output, or live in front of an amp as an effect device.

I do not use anything else at home! You have everything you need in one device. You can record your songs (which is very handy when you want to perfect your own sound) & play it again and again. Thanks to the overdub function you can also record several guitar voices and compose great songs. When I read the drumgroove and jam tracks, I did not expect great ... the typical PC-made sounds .. but no. All super-groovy grooves to which the playing real fun is prepared. Another great aspect is the SD slot to expand the memory & record even more, or to transfer its songs to the PC.

As is the case for a Line 6, you have all the typical Line 6 sounds (incl. Killswitch Engage also sounds like Killswitch Engage (: You can also change the sounds (everything, chorus, delay, reverb, etc.) and save them.
Another great feature is, in my opinion, the MP3-in slot. Just plug the PC, or NEN MP3 Player and already have the favorite songs simply over the JM4 run. In order to be able to reproduce songs optimally, this is simply the best solution.

The JM4 is just great for guitarists who have not completed any technical studies: P can not do anything wrong. The operation is child-friendly and thanks to the large knobs & rotary switches even in low light very well possible. The display is also super good readable.

Had so far no reason to complain. If something should not work as you have imagined, there is also a detailed manual, which one 1. easily understands and 2. each function very precisely describes.

Conclusion: Ingenious thing! For practicing at home simply TOP! Also live playable, whereby in my opinion it is more suitable for domestic use.
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