All user reviews for the 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.

Effects:
- 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.

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

UTILIZATION

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.

SOUND QUALITY

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!

OVERALL OPINION

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!

7

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

UTILIZATION

7

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.

SOUND QUALITY

7

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.

OVERALL OPINION

6

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 ...

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.

UTILIZATION

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 ...

SOUND QUALITY

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 ...

OVERALL OPINION

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!

Looper / Sampler Line 6 ...

All features have been described Samho not in the "News"!

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Otherwise, I leave an opinion because I decided to give one to each device that I had or still have, to contribute to life on the forum!
Indeed, I was lucky to find several opinions on the same product when I registered knew AF! End of parenthesis!
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UTILIZATION

The manual is very well done.
Take your time and read it correctly, because everything is not as intuitive as it ... even if it comes soon! Do not hesitate to tweak, you learn faster ...

Personally, I use it in 3 ways:

-When I go on holiday somewhere! A skyscraper, JM4 and headphone ... it's still better than Amplug Vox. And frankly, it's fun on the balcony of a chalet in the Alps at midnight with a good lather! Uh, HS, sorry!

To-work plans and solos on presets "artists" ... or mine or those of the other guitarists of the band!

-And to save "quickly" an idea that might fly ...

I do not hide at home, rather than to light a lamp for 30 mins, I use the JM4. It is permanently connected to a power amp Marshall VS8008, and all in a 2x12! Work for a while, it's still enough ... we must stop to tell it!

SOUND QUALITY

So SOUND! It is a means, it's true!

There, or Me, I'm very dissatisfied, it's more in terms of effects.
They are very average, and more, it is very difficult to adjust them properly!
But hey, this is not a true multi Fx anyway! Nevertheless, these painful, especially in clean / chorus for me.

Then, other reviews have come down squarely JM4, in terms of sound quality. What I would like to say is that if in this box, there was an AC30, a Dual Rectifier and a Hot Rod, we would know! Or ...

Where is the best sound quality, it is low volume (well, low / medium what!) ... Especially for distortion. A high volume, distortion transo are some limitations, it is true, and you can feel it with this unit! It's messy, it lacks fullness.
Of bass better than the treble. That's what I felt especially through headphones. Otherwise, in my config Power Amp Marshall highs have more precision, and all except "pale".

While the sound is quite synthetic in general, this distortion is that the device gets the best out of the game ..
Crunches are means, they lack the thick, heavy sound of this, and the cleans are rather flat, almost "lifeless" ... what the purists Fenderien panic!

But ... all the rest means and this unit still has the average (10 or 11 out of 20, not more) and not 4 or 6 of 20 as we noted other AFiens! Well, that's their choice. I think their expectations and hopes were such that the disappointment has taken over!

At first, it is not easy to make a perfect loop input. We will resume several times, but we must insist! And after, with the usual manages to make a loop almost "perfect" ... and that runs well.

It can speed up or slow down the presets for some artists ... If it goes too fast, it can be useful. The small downside to this is that the tone will change also. For example, for a preset in MI, if you descedez fèrieure in speed, you will spend in Eb, and so on! Well, it's not bad ... it work a little differently and on other area of ​​the handle ...

Presets some tracks (ACDC, Police, Metallica, etc ... are not so bad I think. This is my personal opinion, contrary to an opinion that it is to puke!

A small flat also for the level of output volume of the instrument!
On some presets artists, it appears too low and you have to change settings (amp simulation).

OVERALL OPINION

This device is intended solely for domestic use, as I describe in the "use"!
If some people expected a great product for live and / or the studio, he missed! Hence, some of their dissatisfaction that I can finally understand! Live, we see mostly the JamMan. Ultimately, we must not mistake the device when it was acquired.
Personally it suits me fine because I was expecting this kind of product, knowing what I was going I do!

To return to home use, it will be used for beginners and scratch "means good," to work ranges, plans and other licks, on sound presets artists (and even on their own), an idea to record output like that! This device is intended for that, guys ... to progress while at home alone, with headphones or an amp!

Zique good at all ...

I will pass on what has been said before.

UTILIZATION

Contrary to what is said below, you can obviously get rid of the count (they are still not mad at Line6), just 3 minutes to hack the device to understand (or read the manual!).

It works like any looper, it is accurate, easy and offers the advantage of either the sampler or the guitar mic which is great for use vocals / guitar (a pr button to switch between the other)

In addition we can separately equalizer singing and guitar ... which is great too!

SOUND QUALITY

For quality sound, it makes the case pr of small live (pub) but it will never be worth heads tube amp!
I personally played the acoustic Gratt and I never used the distortion.
And contrary to what is said, too, can have the pure sound of Gratt bypassing the amp simulations.

OVERALL OPINION

It is a small bracket that makes his job for a fair price.
Very beefy must throw a building to break it.
And with samples of its banks and it's fun, for work at home.
The looper function is perfect, and the micro switch vocals / guitar is unique and welcome!

We almost made the rounds of the unit, but I have a summary for those too lazy to look,
basically we have a loop pedal, ie they register, and you can play over our sample, we also simulated amps, way to clean a large distortion through the overdrive, for a total of 12 presets, effects were tremolo / chorus / phaser we can not use one at a time that may have a double echo (3 different) and reverb. Finally there are settings pre-recorded songs known (hey joe of master of puppets), and pre-recorded drum tracks to be accompanied.
Finally we have an auxiliary input, a headphone, mp3 input, microphone input, 2 stereo outputs, and of course a guitar input and an output amplifier.
And to top it off you can put an SD card to transfer loops on computer.
On paper it seems perfect for just 300 euros, seeing all this I thought "Great! With that I could do it all", especially since I bought used 'for 170 euros, but soon we realize that this pedal is a compilation of faults, I write so that "chronic" to open the eyes of those who thought like me at the beginning and they do not make the same mistake.

UTILIZATION

The configuration is fairly simple to choose the settings you should just turn the knobs, we choose between the clean amp settings, and distortion with a palette of 12 settings (5 or 6 would have sufficed), we selected our belongings, the sampler Battery and it registers accompanied, in short all is well. I had no manual, and I am very much out, everything is very intuitive (at worst on the site of line 6 can be found the record).
From that moment things that spoil ... For those who have enjoyed using this pedal in concert, I wish them good luck. While it can remove the battery from the demo, when you press Reccords was a small déompte 4,3,2,1 and recording starts, and although the countdown, it will make you chi * r to the end of your life! I do not know if it is I who am no one, but I have not found a way to remove it, basically if you want to use it live anticipate it will take a few seconds before the start of your loop does not start before or after recording began. Me my trick was to sample the "fast punk rocker" which is where the count is the shortest, with that recording starts 1 second after it was pressed on the pedal, which is still amazing ! And to stop the loop is not better, as it saves one sees the tempo which runs 1,2,3,4,1,2,3,4 ... and when you press again on the pedal to signal the end of the loop, the loop will wait to be on the 4 to stop recording, basically when you press to end your loop if you're not on the four at this time there, he'll have to wait one second to return the timer on the 4 and the recording ends. I do not know if you understand, but the trick is that you surgical precision for the perfect loop with the beginning and the end that is not cut or extended.
I still remember that the principle of the loop is "lean it saves you r'appuies it finished recording" it looks like ben line 6 know how to do that.
That said it is not necessarily a pedal for live, I will admit, but the studio is even worse!

SOUND QUALITY

And continue on the most negative point of this pedal, the sound. It's bad, but bad! At first I thought I had a rotten one because I had bought second-hand ', or because the power supply' was too low, but no, this is the normal sound that I hear. Just the bybass, at home when you are bybass is as if there was no pedal, it has a natural sound, in line 6 is not the same, it was a rotten one. I use a Marshall amp that illuminates a round, warm, and with this pedal is a coming out of the abject. So we try to find a setting among those we offer the pedal to have a nice sound, but do not try, there is none. The clean is bad, it looks like we listen to someone playing in another room, the crunch is simply awful, and distos are terribly rough, the sound sounds totally electronic, it's not natural at all, that we play with a harley benton 50 euros or a gibson les paul 70 'is the same. There are some nice presets and quite faithful to the original version, but the others are throwing up (another brick in the wall, hey joe, back in black ...) the guys who made the "preset" they at least listened to the songs before. The only thing I really liked his level is the sweep echo, but why just buy a line 6 echo pedal, it costs two times cheaper and it has good sound.
Otherwise the quality of the recordings of pieces of battery is good, then I have not much to complain, and you can adjust the speed of the song.

If you have the hope that the SD card recording are good and you can make edits to your own songs, it's not worth it, the sound is fake and if you enjoy to overlay multiple tracks is downright draft, when you improvise a solo you hear not the rhythm, and if you try to mount the rhythm track will be muted solo on the computer, in short, level studio is dead also.

OVERALL OPINION

Well even if the sound is poor, and the indomitable loop, there is still an advantage (though) is that it is an object which is quite portable and comes in handy if you go to a place or there is no amp, stupid example, this summer for vacation I could take my guitar, and this pedal in my suitcase without my amp of course, and I could play with headphones or small baffles simple though I preferred to play unpluged ... I am very happy to have paid Moitiers price, and I'll sell it as quickly as possible to catch the blow. I recommend this pedal for those who think playing with a live (rather take the jam man, I have not tried, but the comments are quite positive), and even in the studio for that matter. Basically this pedal is good for beginners, the guys who do not have amps or who want to improvise little things in their room, but then do not buy it new! opportunity 'is enough, and even a pod in line 6 is 3 times smaller, it fits in your pocket, it cost 100 euros, you can plug it into his computer, and with audacity you have the equivalent of a loop, so I see no reason to buy the JM4?!
As a final point, do not connect, oh, ever it low! The looper's not even detected, and the instrument loses its energy.
So here I am not averse to get rid of this thing after spending a year with her, and if it again ... I would have taken something else, anything but that!

For the technical description, I'll let you check out the line6 site.
Very complete connectivity The only downside being the absence of a switch on / off.
Everything else is very well thought out, despite the size of the product (4 switches anyway).
The hull is of good quality plastic.
The transformer is supplied with large, therefore provide a good cover type bracket for mobile use.
All buttons are relatively accessible, the large dial is a real plus in terms of saving time.
Note the presence of cate SD slot to save even more things and to perform firmware updates.

UTILIZATION

As usual, Line 6 does not come only a looper but a Swiss Army knife.
The looper is indeed a boarding pod integrated with all the modeling amps that go with it .... no surprise is the Line 6 and it's heavy, it's like to have a pod xt "light" in the hands.
Being a regular at the brand, I did not have to read the manual to explore the beast.
Editing sounds really poses no problem, and access to samples and recording is intended so easy, everything is controlled with foot qqs settings in advance (like disable the automatic selection of sounds when changing song ).
The pedal can also be configured in different ways and may for example be used only multi effects, it says a switch over to increment the program sounds would have been welcome, it will be necessary to bend down and pick his sound with his girl on the mimine selector to disappoint .... I require .. eh !!!!!

SOUND QUALITY

This is the Line 6 sounds are the same as the series spiderIII, it's very very good if you take the time to tweak the knobs a little and as often in Line6, not to push the gain in depth (beyond 13h) to maintain a clean and precise.
Songs and samples are enregstrés an incredible quality, everything was done by professionals in the studio .... we are very far from the drum machines integrated with rotten boss pedals.
I wanted to use this only as a looper pedal and more without going through an effects loop like any other pedal (thank you Line 6) but the whole rhythm section is top notch .... recorded all styles are present, we can only keep the battery if you want ........ we really feel like going to play with ..... zicos tOP
As for the loops, a small pedal stroke to record .. and tat's it .... so easy, it is obviously stacked and then delete the last taken a real looper, the stack of a dozen tracks do not appear to alter the sound, unlike some other pedals.
Small problem, the absence of automatic release of the record to the first note played (boss does), then it will be clear with his foot but that does not pose too many problems with a little practice.
In sound modeling, this will obviously depend on the type of amplifier which is connected to the toy, a Valvestate 80, the sound is nikel but when I plug in my head SpiderIII connected to a 4 * 12, it is more difficult to find a neutral sound ... so I use a Twang Red on my head and after a small adjustment of equalizer is nikel.

OVERALL OPINION

HUGE ........
What else ..... it is above all a great tool, a compact course ........ but oh so gratifying.
Line 6 surprises us yet again, there is often very very good and sometimes very poor (microspider. spiderIII .. 15), but now it's heavy.
Go for a shop to test it and you will pass.
I had a Boss RC20 to home ......... NOTHING TO DO in terms of simplicity and efficiency.
All songs are varied and can work on different rhythms and solos to send through all possible modes and ranges, many bluesy accompaniment allow flights myxolidiennes and work on that mail order harmonic minor scale.
I allowed myself without any difficulty to import sequences that I programmed on my micro br.
The icing on the cake, can connect and play two instruments at the same time we can assign such a low entry with an auxiliary bass amp modeling and then a keyboard or something else, in short, all configurations are possible and ring the fire god.
I have not tried the mic input.
I am a teacher and I think this little toy will accompany me in my classes to make them even more alive, for the use stage .... why not?

I will not dwell on the characteristics refer to the line6 site for that.

good points:
_3 Entries: big jack for guitar or bass, mic and xlr mini jack for MP3 player or micro
_sortie amplifier, headphone and line and the great thing can be separated out of the drum machine / loop and that of the guitar

bad point: no switch on / off

UTILIZATION

Like all products line6 use is simple, a little tour of the manual is still necessary to understand some features subtle and very interesting.

at first glance it lacks features at the base but in fact the 4th switch is used to change the function of the other 3 so you can change the effect being to change the input used games ... bcp so short of options.

Editing effects is simply turning a few pots and you can save 36.

SOUND QUALITY

The quality of the amp emulations are very honest c line6, so for the big sound ca is always a bad area but good old metal versatilté saw the sounds and the number of possibilities we're not going to complain.

on the other hand when it comes to using my old metal zone or my vox brit boost over a big problem arises, the bypass is not a true bypass or to big problems of difference in volume between presets the beast and the bypass, for against the use of a whawha no problem fortunately. This bypass is the only downside of this pedal because I really like the sound of my distos "canned".

I almost forgot to mention the drum presets, they're great its not nintendo but the "real" drums recorded in the studio, the available styles are varied. Your JM4 reveals himself to be a very powerful musical notepad since you can save what is recorded, no more riffs forgotten, if I said that the more you can encode. Wav and transfer it to SD card not life grand?

OVERALL OPINION

A great product, easy to use and powerful I wanted to buy in DigiTech JamMan looper but after trying this JM4 my heart capsized.

The ability to choose which signal is recorded is pretty great because it allows a clarinetist friend to enjoy the beast on the same stage with a little organization.

I recommend this purchase any guitarist or other instrumentalist looking for a sequencer performing for stage and home.

Here is a looper numrique - amp simulator - player / recorder / WAV rptiteur.
3 in 1!
O "classic", except that the connection is via PC 2GB SD card and not USB cable.
Aluminum hull robust push-buttons to shoot, in pots plastoc correct screen visible.
It's beautiful, a shining, flashes when a button, a brief feels the trick well.

UTILIZATION

Quick, clear with a manual (especially if you speak franais).
Looper: loops are done, they Ampil, we improvise on it. With a microphone and / or instrument supplmentaire (anything that plug) can enhance its original loops fawn.
Rptiteur: full of jam available to improvise. And it's live, not digital!
You can also import your own jam. Wav format (44100Hz, 16 bit, mono); convert a lot of guitar backing track and make up for any guitar hero with his arm casss group.
Looper function remains active on playing jam; it - afraid to say that the loop part of a song we INTERESTED.
Amp simulator: a can also be used as multi pedals (why not?). The modulation effects are convincing and the variation on modalizations wide enough.
The default port USB does not impede me: my PC and my JM4 do not live in the same pice ... If the connection only USB silent, I'll have to unplug my PC every time

SOUND QUALITY

The sound is really good.
I scratched for 20 years, frankly, with modlisations we do today, the sound is ending for qute ends.
As long as you do not have a shovel between the legs 3 chords, you can leave the overdrive or distorted super warm up the cord and clear the rounder than chrystalin.
Play with the slecteur the scratches, the Tone pots of earnings, the proposed modules ... The range of sound is really wide (there's see how many factory presets available in the machine).
I play it with a JVM Bdarieux of 1000 and a headphone on the face for not rveiller kids.

OVERALL OPINION

I found in a German eBay for 280 euros (livr. Ms. nine in France (about 310 euros) worth it.
If like me you have no talent, no friends, no pets and no domstique drummer, get this absolutely bote that will change your guitar and you take your fingers and ears to one good time!

See other reviews
Excellent

UTILIZATION

Very simple!
Note: the foot switch can be configured (excellent!) And is used to assign loops (start, rec, stop, unddo etc.) either the presets or effects (amp, ...) not found in competitive

SOUND QUALITY

All very good and very funny

Possibility for example to copy songs. Wav on the SD card and play them on the JM4 ... even better: they can "import" format JM4 (from JM himself) and as a result can change the tempo and key (as on the 100 songs to prerecorded loops and jam): amazing!

OVERALL OPINION

Used for 6 months

Much better in every way that rc20xl (I had) and the JamMan (which I had too)

Small flat for manufacturing quality and robustness (to see over time) and the on / off button away!!

All adj t said ...
Looper and amp simulator

Significantly smaller than the RC 50.

No on / off button.

UTILIZATION

The handling is intuitive, especially when you have used another looper.

The manual (in French) is clear and short. Note the version of "advance" of the manual in English only at the site of line 6.

Looper function is very simple.
The amp simulator is also intuitive, as all other Line 6 products.

Nice to change the function of the pedals, but it quickly becomes sport to change its pRSET, while the grant overdub.

SOUND QUALITY

I like the sound, it's line 6. Not a ton of effects but is still good even customize.

I use it mostly with my Lag Roxanne Standard.

Ct loops, both drums and songs, recorded the pRSET are really terrible ... This changes accompanying the RC50 that I used before.

OVERALL OPINION

I use it extensively for just 1 month. Bought new 250 euros on ebay in Germany, including postage.

I sold my RC50 that I used for 3 years, mostly to work alone on grids rock, jazz and blues.

The JM4 is much more my need, with soundtracks and multi ralistes Intgr effect.

Excellent quality / price.

A amlioration possible that Line 6 continues to offer band sounds and drum loops, keeping in mind that no one plays the rock guitar (but hey, I ' I made my choice knowingly!)

Swiss Army knife, but that does nothing really well, just good!
Looper effect (for which I had purchased)! But we can only use one loop and we can not change the loop without stopping the function of looper looper?? :-(

The amp simulation and effects are super bad for me

I put 5 because for the price it's perhaps not bad for a beginner, but for me who had bought it for the looper, it is not great.

As against the backing track to jam over prerecorded very well!

UTILIZATION

All this means

SOUND QUALITY

Rubbish is the great weakness

OVERALL OPINION

I quickly sold.

I went to the DigiTech JamMan stereo, there is no amp simulation, or effects, no backing track, but it looper nickel!

Well, no I probably would do no choice Line6!

Over 100 Endless Jams improvisational tracks and drum loops ™
• Ability to store 100 jam sessions in CD quality audio (recording time: max. 24 minutes)
• Memory card slot for importing and exporting loops and recordings (can use a memory card with max. 2 GB to store up to 6:30. Memory cards sold separately.)
• Switches dedicated to control functions Registration / Adding track, Play / Stop, Half Speed ​​and Cancellation foot

• Input Jack 6.35 mm instrument
• Aux in Jack 6.35 mm
• XLR microphone input with dedicated gain control
• Entry into a mini-jack 3.5 mm for connecting a CD/MP3 player
• Headphone mini-jack stereo 3.5 mm
• Output guitar Jack mono 6.35 mm
• Outings TRS 6.35 mm

UTILIZATION

Bob's that this gate, this thing is unusable in live, what is more what is the height the effects loop does not snap to the beat which also can not be "hit" in pied.C is pity me, who trusted the Line6 products so far, I would look at 2 fois.En regarding the management of your registration you will have to arm yourself with patience, the format is proprietary file you exported your computer and convert them via utilitaire.Pas editing direct.Pour work on your music should save it as wave 16b 44k mono and import it via the map mémoire.Bref AC dildos head.

SOUND QUALITY

The good, it goes something worse.

OVERALL OPINION

I've had it three months and I used to work for a few riffs or jamming with the loop plant. In fact it serves me rien.voila hello to the wise

(See other previous opinions and the site Line6 super explicit and complete)

UTILIZATION

It's simple but you have to read the manual a bit because everything is not super accessible intuitively through menus and submenus ..
The manual (very basic) is clear and can grip fast enough (but you must read!)

SOUND QUALITY

Well, next to my podx3 live, or even my Behringer V-Ampire (vamp 2.2), it sounds much worse (for amp simulations and effects, it is much more basic!)
In contrast, the loops recorded, the drums are real to jam on top (it is far ahead of BAR = these are synthetic backtracks level studio).

So two different notes: the first developed a 5 / 10
the second a 9 / 10

OVERALL OPINION

I use it for 2 months ...
JM4 excels especially in the quality of his recorded tracks (its loops drums / bass / accomp studio quality), the possibility of imports and exports songs wave (via SD card). In two months, however, I finally just used as an amp simulator / effects (because I had the pod x3 live at the same time !).... remains the looper large capacity, easy to cry, the tracks of presets for horse training or guitar ...
A super flat but for a very ....= c. there is no switch on / off, which means investing in a dedicated outlet with switch wire = more in the electrical installation .. . we wonder sometimes what some manufacturers think! ...
Well, I sold mine (cause underemployment) on another site, but pffiou here on AF, there is an ad dive group, which implies that the JM4 is a disappointing bike. However, it is a great looper (which is pretty normal for a looper!) Which, in addition, an amp modeling, a simulation of effects and presets backtracks excellent for jam (which is pretty good for a jam-machine!). I think I'll keep mine for loops electro acoustics (reverb very well made and correct delays sufficient to enhance my Ovation).
Looper as high-capacity, whose songs are biblios import / export via SD card, this is a recording guitar with undo / redo without breath work arrangements (for my part, I will not use, I think, almost never The amp models, and enter through the pieces of the electric in which I connect the pod x3 live).

But that said, I keep my "squirrel", na!