Combining exhilarating jam tracks with sound-on-sound looping and a full arsenal of legendary Line 6 tones, JM4™ Looper sparks inspiration in ways other looping pedals can only dream.

JM4 Looper features over 100 Endless Jam™ tracks and drum grooves in more than 10 styles performed by top LA and Nashville session players. These tracks aren’t rigid and robotic; these are actual recordings laid down by A-list drummers, bass players and guitarists. The real-world chemistry from these dynamic rhythm sections is here for you to explore your creativity in writing songs, trying out solo ideas or just honing your chops between gigs.

With up to 24 minutes of recording time, and storage for up to 100 recorded jams, JM4 Looper lets you capture all your riffs and musical ideas. A 2-GB SD card in the SD card slot provides additional jam storage and .WAV file transfer to your computer or recording software. Plus, use the SD card to import your own songs into JM4 Looper and transpose, time-stretch or loop over any music you want.

The looper has dedicated footswitches for Record/Overdub, Play/Stop, Half Speed and Undo for super-easy practicing, songwriting and creation of an entire backing band on the fly. Layer guitar tracks, bass tracks, keyboards—even vocals with the balanced XLR microphone input.

Complete with a comprehensive collection of brilliant modern and historic guitar tones, JM4 Looper gives you access to 200+ artist-created presets, 150+ song-based presets, 12 Line 6 amp models and a stunning array of effects for guitar and vocals. There’s even room for 36 presets of your own creation.

Amp Models

JM4™ Looper offers an extensive collection of modern and historic guitar tones including 200+ artist-created presets, 150+ song-based presets, 12 Line 6 original amp models and a stunning collection of effects for guitar and vocals. There’s even room for 36 presets of your own creation.

Just like most of us, each Line 6 original amp model has a light side and a dark side. Or, in some cases, a dark side and darker side…

RED		GREEN
Clean		Clean
Crisp, shimmering clean tones and warm jazz tones.		Glassy clean tones like those from the late 60s/early 70s. Inspired by* a ‘73 Hiwatt® Custom 100.
Twang		Twang
Classic, glassy high-end with some snap and bite. Inspired by* a Fender® blackface ’65 Twin Reverb® and a blackface ’64 Deluxe Reverb®		Swingin’ rockabilly tone a la vintage tweed. Inspired by* a ’53 Fender® tweed Deluxe Reverb®, a ’58 Fender® tweed Bassman® and a ’60 Gibson® Explorer®
Blues		Blues
From gritty, swampy clean tones to syrupy smooth drive tones. Inspired by* a mix of a ’65 Marshall® JTM-45, a ’58 Fender® Bassman®, a ’63 Fender® Vibroverb and a Supro®		Early British rock tone made famous by the Beatles the Stones. Inspired by* a fawn Vox® AC-30 with an updated and expanded tone control circuit
Crunch		Crunch
Classic crunchy tone popularized by many early metal bands. Inspired by* a '68 Marshall® Plexi 50-watt		The infamous brown sound inspired by* a ‘68 Marshall® Plexi 100-watt with a few added extras: jumped input channels and a Variac transformer
Metal		Metal
Tight and punchy high-gain sound. Inspired by* a Mesa/Boogie® Dual Rectifier®		Aggressive high-gain sound. The mid knob sweeps the tone spectrum: set to minimum for fuzz-pedal characteristics; set to noon for creamy, modern high-gain; crank it for Class A carnage
Insane		Insane
Famed and feared bone-crushing, brain-piercing grind. Inspired by* the Mesa/Boogie® Dual Rectifier® red channel		Short of a complete meltdown, as much input-gain distortion as possible while retaining tonal definition and character

Effects

Add depth, color and texture to your guitar tones and vocals with any of the pro effects included in JM4™ Looper. Spend more time playing and less time tweaking your guitar tone with Smart Control FX. Find the effect you want, turn the knob to the desired intensity and you’re done. Seven effects to choose from—use up to three at a time.

SMART CONTROL FX

• Chorus/Flanger
• Phaser
• Tremolo
• Delay (with Tap Tempo)
• Tape Echo (with Tap Tempo)
• Sweep Echo (with Tap Tempo)
• Reverb

GUITAR

• 200+ artist-created presets

• 150+ song-based presets

• 36 user-programmable presets

• 12 Line 6 amp models from Clean to Insane

• 7 Smart Control FX Chorus/Flanger

Phaser

Tremolo

Delay (with Tap Tempo)

Tape Echo (with Tap Tempo)

Sweep Echo (with Tap Tempo)

Reverb

• 3 tone controls Bass

Mid

Treble

• Integrated tuner

VOCAL/AUX

• Independent Mic/Aux input effects: 3-band EQ, Compressor, Delay and Reverb

Looper

• 100+ Endless Jam™ tracks and drum grooves

• Save up to 100 CD-quality recorded jams (totaling 24 minutes of recording time) internally

• SD card slot for importing and exporting loops and recordings. (Supports up to 2-GB SD card for storage of up to 6.5 hours of recorded jams. SD card sold separately)

• Dedicated footswitches for Record/Overdub, Play/Stop, Half Speed and Undo

Ins and Outs

• 1/4" instrument input

• 1/4" aux input

• XLR mic input with dedicated trim knob

• 1/8" CD/MP3 input

• 1/8" stereo headphone output

• 1/4" mono guitar output

• 1/4" stereo outputs
Tell me more about the Endless Jam™ Engine—how does it work?

The Endless Jam Engine is a simple arrangement system that we developed to get great mileage out of the jam tracks. It breaks each jam track into sections, arranging everything between the intro and outro into an Endless Jam, creating jam tracks that can go on forever without getting boring or overly repetitive.

Are there any "drums-only" jam tracks in JM4 Looper?

Yup, JM4 Looper is loaded up with over 80 drum loops played with perfection by incredible session pros. They were recorded in legendary rooms like Abbey Road Studios.

Can I transpose keys in the jam tracks? Will they speed up or slow down when I change keys?

JM4 Looper supports time stretching, which allows you to adjust the key of the jam tracks without affecting the tempo. Conversely, you can also adjust the tempo of the jam tracks without affecting the key.

Can the JM4 Looper record more than just the guitar signal?

Yes. The looper can record all inputs and, in fact, it keeps the full-range stuff on a separate track from the guitar signals.

How many loops can I store on the JM4 Looper? And how long can I record for?

You can store up to 100 loops internally with a total cumulative record time of 24 minutes.

Can I really use a bass guitar with JM4 Looper? How about an acoustic guitar? A keyboard?

You can jack anything you want into the aux 1/4" input and rock out. We've developed tone presets for electric guitar, acoustic guitar, bass guitar, keyboards—you name it!

Where can I hear more tracks from these great players?

Make sure to check out GuitarPort® Online and jam to other incredible tracks performed by these extraordinary musicians. (Requires compatible Line 6 hardware.)

What’s up with the SD Card slot?

With an SD card, you can store lots more jams—up to 6.5 hours!—export your jams to your computer’s recording software and even post jams online. Plus, use the SD card to import your own songs (in mono 16-bit 44.1 kHz .WAV format) into JM4 Looper and easily play over them, loop over them, or change the tempo or the key.