Line 6 JM4 Looper

Line 6 JM4 Looper

  • Like
  • Tweet
  • Pin it
  • Submit

JM4 Looper, Looper from Line 6 in the Stompboxes Modeler series.

18 user reviews
Prices starting at $330 Average price: $330

Line 6 JM4 Looper tech. sheet

  • Manufacturer: Line 6
  • Model: JM4 Looper
  • Series: Stompboxes Modeler
  • Category: Loopers
  • Added in our database on: 03/13/2008

We have no technical specifications for this product
but your help will be much welcomed


Buy new Line 6 JM4 Looper

Amazon Line 6 JM4 Looper $329.99
Amazon Line 6 JM4 Looper $329.99
Sweetwater JM4 Looper Pedal $329.99

Line 6 JM4 Looper user reviews

Average Score:4.0( 4/5 based on 18 reviews )
 8 reviews44 %
 3 reviews17 %
 2 reviews11 %
 2 reviews11 %
 2 reviews11 %
Audience: Value For Money :

moosers's review

Line 6 JM4 Looper
The Line 6 JM4 is a loop and delay foot pedal that is designed for use with any electronic instrument, and also has the capability to be used with a microphone.  Since the pedal has an XLR input for a microphone you can use it for singing and do some pretty awesome overall.  In addition to the XLR input, it also has a variety of 1/4 inch connections for inputs and outputs.  It is a digital pedal that isn't rackable because it is a foot pedal.


Using the Line 6 JM4 for its basic features isn't too hard at all, but diving deeper will take some time simply because there is so much that you can do with this pedal.  For starters, you have the parameters to control your tone including knobs for amp modeling, drive, bass, mid, treble, as well as effects like chorus, flanger, phaser, and tremolo and different types of delays like tape echo and sweep echo, which are two of my favorite modes found on the Line 6 DL4 delay pedal.  In addition to these tone parameters, you then have all of the controls for recording and looping your sounds, which are in digital form and can take some time to understand everything that it going on, but is fairly simply to do basic recording and looping.  The manual is helpful and is definitely worth having around if you are trying to learn everything about this pedal.


The sound quality of the Line 6 JM4 is pretty good overall.  While it does sound good in terms of the recording and the playback as it won't color the tone too much other than how you set the parameters, the effects sounds like they are digitally processed, which of course they are.  They aren't all that realistic, so I tend not to use them that much because I have other pedals that I can use if I want other effects, so I really only use this pedal for looping, recording, and storing.


If you are someone who loves to loop things and play around by playing over things you have prerecorded, this pedal is for you.  The price is reasonable as it is about the same price of the other pedals in this line.  While you get a taste of the looper on the DL4, this pedal has infinitely more capabilities in terms of the time that you can record and the amount of information that you can store.  I love having the capability to record all of my ideas and play off of them within a single pedal as I find it great for coming up with ideas.  While there are a bunch of similar types of pedals out there, the Line 6 JM4 is put together well and I would definitely recommend checking it out along with some of the other loopers out there on the market like the ones made by Digitech and Boss.

nicodx's review (This content has been automatically translated from French)" Excellent machine for fun and work!"

Line 6 JM4 Looper
Looper pedal with digital effects and SD Card. You can create the loop, or work pieces by loading backing-tracks, and even impress their friends by playing these songs with the accompaniment plays itself.

- A damn good looper and almost unlimited because you can use an SD Card.
- The amp simulation: Clean, Crunch, etc..
- Delays with tap tempo, Phaser, etc..
- An efficient compressor.
- A separate reverb.

+ A box with integrated rate
+ Pieces on which to improvise (but useless in my opinion.

- Guitar,
- Microphone with XLR input,
- Auxiliary.


The setup is fairly simple, but it's still a looper with effects, therefore, must spend some time on the manual is very well done.


Effects are sufficient at this level (this is not a multi-purpose either!)
The separate reverb is appreciable.
The compressor works well.
The amp sims are good but I'm not a fan. I prefer my Roland Cube simulation.

I use it with a Fender American Standard Telecaster and everything connected to my live stereo or headphones.

Sounds nickel!


I use it for 3 months and I am delighted. This is a very good camera in my opinion but a bit expensive new.

I have a problem: the headphone jack is a little jaded so robustness issue, it is a bit mean.

In addition, general way, it is for use at home, but for the stage, a specialized looper seems more appropriate (as you put too many effects, the sound is a little distorted therefore found not top: ().

Otherwise, for the rest not worry. And gained occas, I do it again this choice without hesitation!

guitar.bruno's review (This content has been automatically translated from French)" Satisfactory"

Line 6 JM4 Looper

Effects are those of colleagues and other Floor Pod Pod 2.0, no compressor against.



It's pretty simple, the primary goal being the repetition of loops or without addition or with preset rhythms.
Manual clear and Editions of affordable sounds and effects.



The use of effects and modeling is satisfactory with the bare minimum, there is a clean, crunch and distortion easily.

With Fender Tele and Gibson Flying V.



I've had it about 3 years.

The big problem is that the recurrent loop bugue sometimes it starts recording and the end can not hear anything! Repair method that I finally found is to do a factory reset to restore normal operation.

I have not found a solution or a firmware update to address this problem ...

ratsscabies's review (This content has been automatically translated from French)

Line 6 JM4 Looper
See below ...
Everything is for fun, equalizer, preset effect, beatbox, looper ...
There is no USB port!
Left-right output that can switch on 2 amps.
Material thought to play well at home or repet.
No internal lamp but anyway it is useless.


I plugged in and I played, nothing complicated if we already had multi-effects ...
The manual is only useful if you want to deepen the technology of the device otherwise used without manual entirely possible and super easy!
Potentiometers on the front are convenient and simple, just what you need.
The drum part is super convenient to train in tones and solos, JM4 not used to it?
In addition to the tone is indicated on the screen.
The knob, amp model, you can change the type of sound, light (very) saturated, very convenient.
Only problem, is not controllable foot is better to use the hands up to the settings.
The material is made to train at home and it is perfect ...


Then I do not understand the guitarists friends below?
The sound effects and great, we get to slap sounds way to strat sounds very metal until slaughter saturations extreme!
The clear sound effects are realistic and large enough to have fun as it should be.
I first tested with a guitar Brian may signature Trisonic three single coil pickups and I found in the preset sound quality may brian CD ...
Plugged into an amplified speaker, this way no addition effect on amplification except low-treble.
The sound is very clean.
I think to play the guitar, you must keep it simple without too much thing to add ...


I use it for 2 hours, I have not done all the way around the camera, but the whole.
I had all the gear a guitarist can have in his life almost, that is saying a lot!
I think it's still expensive (nine), but in life everything is expensive!
Fortunately there are nice guys and serious on the net that sell occas at good price!
I am happy with my purchase, against your instincts and do not listen to others, and this applies to everything, not only in music!
A small bemol for manufacturing quality made in china at the buttons, but we'll see in time ...
Small problem also for the social life, when you push the sound back, we no longer hear Mrs. say 'at the table!' and that mouth!

Line 6 JM4 Looper news

Line 6 JM4 Looper now Shipping

Line 6 JM4 Looper now Shipping

Published on 09/02/08
Line 6 has announced that they are now shipping their JM4 Looper which features over 100 tracks and drum grooves in more than 10 styles.

[Musikmesse] Line 6 JM4 Looper

Published on 03/13/08

Line 6 JM4 Looper images

  • Line 6 JM4 Looper
  • Line 6 JM4 Looper
  • Line 6 JM4 Looper
  • Line 6 JM4 Looper

Line 6 JM4 Looper videos

Line 6 JM4 Looper audio files

Line 6 JM4 Looper manuals and other files

Discover other products!

Other names: JM4, JM-4

Line 6 JM4 Looper forums

Cookies help us improve performance, enhance user experience and deliver our services. By using our services, you agree to our use of cookies. Find out more.