Line 6 JM4 Looper

^# 65

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$90.00 to $279.99 Price Tier: Standard

4.0 (4)

2 Critic Reviews

1 Review

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Featured in

Best Looper Pedals for Guitar: Gear Guide

2 wishlisted

12 saved

Page last updated Jun 30, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated June 29, 2026.

Store

Reviews

Price

3.9 (25)

$279.99 Used

View Deal

4.0 (19)

$90.00 20 available Used

View Deal

Average Price: $185

Standard/Professional

$100

$301+

Price Tier

In the Looper Effects Pedals category, Line 6 JM4 Looper is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

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Description

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Elevate your musical journey with the Line 6 JM4 Looper, a perfect fusion of innovation and versatility for guitarists. This looper isn't just about endless layers; it's a comprehensive tool that brings the studio to your home. With an extensive library of over 100 jam tracks featuring legends like Jason Bonham and Tony Franklin, and an array of amp models and effects, the JM4 goes beyond traditional looping. Whether you're rehearsing, creating, or performing, this pedal offers a plethora of presets and soundscapes at your fingertips. Its intuitive interface makes it accessible to musicians of all levels, ensuring your focus remains on creativity and expression.

Key Features:

Over 100 jam tracks by renowned studio musicians
Extensive collection of amp models and effects
Hundreds of artist-created and song-based presets
Voice effects for expansive soundscapes
Save functionality for personal presets and settings

Product specs

Brand	Line 6
Model	JM4 Looper
Finish	Grey
Year	2008 - 2018
Made In	China
Categories	Loop Pedals and Samplers
Pedal Format	Floor Unit

FAQs

What are the main features of the Line 6 JM4 Looper?: The Line 6 JM4 Looper offers over 100 pre-recorded jam tracks, a 24-minute recording capacity, and built-in effects from the Line 6 POD series. It also includes a mic input with preamp, making it versatile for both guitarists and vocalists.
Can I use the Line 6 JM4 Looper with a bass guitar?: Yes, the Line 6 JM4 Looper can be used with a bass guitar. Its diverse effects and looping capabilities accommodate various instruments, including bass, making it suitable for multi-instrumentalists.
Does the Line 6 JM4 Looper require a specific power supply?: The Line 6 JM4 Looper requires a 9V DC power supply. It's important to use the correct power supply to ensure optimal performance and avoid damaging the pedal.
How does the Line 6 JM4 Looper compare to other loop pedals?: The Line 6 JM4 Looper stands out with its extensive library of backing tracks and built-in effects, which are not commonly found in other loop pedals. This makes it particularly useful for practice and songwriting.
Is the Line 6 JM4 Looper suitable for live performances?: Yes, the Line 6 JM4 Looper is suitable for live performances due to its robust looping capabilities and footswitch controls, allowing for seamless integration into live setups.

Videos

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Robert Renman's Master Guitar Academy

Line 6 JM4 looper pedal demo

Robert Renman's Master Guitar Academy

Line 6 JM4 Looper

blondegraemey

JM4 Looper Overview | Line 6

Line 6

Line 6 JM4 Looper Review - HomeStudioCorner.com

Joe Gilder • Home Studio Corner

Line 6 JM4 Looper: No Preset For "A Boy Named Sue?"

gearwire

Line 6 JM4 Looper Demo - by Dhalif

City Music

Line 6 JM4 Looper Demo with Paul Hindmarsh

PMTVUK

Line 6 JM4 Looper Demo by Dhalif Ali

Dhalif Ali

Line6 JM4 Looper Pros and cons / Is it good or bad?

K Guitar

Reviews

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PROS

Versatile multi-effects pedal with guitar and microphone inputs
Quality EQ settings enhance microphone use
Allows simultaneous use of guitar, microphone, and drum machine
SD card storage for loops and tracks
Drum computer features realistic patterns for full-band experience
Wide range of tones from ultra-clean to heavy metal
Easy to transport and integrate into live setups
Authentic song and drum tracks for effective practice
Extensive input/output options for flexible connectivity
Useful for learning various rhythms and genre-specific playing styles

CONS

Built-in reverb quality may not satisfy all users
Limited to 1 or 2 GB SD cards, which can be pricey
May not fully preserve low-end frequencies for bass guitars

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Line 6 JM4 Looper.

Features and functionality

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The JM4 Looper includes a variety of drum tracks and songs for practice, enhancing its utility as a practice tool.
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It allows simultaneous connections for mic, guitar, and bass, enabling diverse input sources.
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JM4 offers Undo, longer recording time, SD card storage, recordable presets, amp models, modulation effects, and a tuner, differentiating it from the DL4.
Source

Setup and maintenance

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Owners report that using the pedal's built-in guitar tones can alter the output volume to the amp, leading many to avoid using them.
Source

Value and pricing

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A used unit was purchased for $180, with the owner feeling it was worth the investment for its capabilities.
Source

Use cases and applications

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The setup can route mic, bass, and drum tracks through a bass amp while keeping the guitar signal separate through a guitar amp.
Source

Build quality

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JM4 uses M5/9/13 footswitches, which are reportedly more robust compared to the DL4, though concerns about surface-mounting persist.
Source

Comparisons

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BOSS RC-30 is considered a more compact and affordable alternative with two independent loop tracks, despite the JM4's feature improvements.
Source

User experience

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Some users find the JM4 bulky for its features, suggesting it's not the best choice if space is a concern.
Source

Critic Reviews

Line 6 JM4 Looper Review - Premier Guitar

premierguitar.com

The Line 6 JM4 Looper is a multifaceted powerhouse for guitarists, offering far more than basic looping. With its robust amp modeling, effects, and a vast array of presets, it stands as a comprehensive tool for both practice and composition. The inclusion of artist and song-based presets adds significant value, providing an array of tones from iconic tracks. Its standout feature, the "Endless Jam" tracks, enriches the experience with quality grooves that mimic playing with a real band. While its versatility might overwhelm those seeking a simple looper, the JM4 is ideal for musicians desiring a rich, all-in-one solution.

positive

Full Review

Line 6 JM4 Looper review | MusicRadar

musicradar.com

The Line 6 JM4 Looper is hailed as a standalone practice powerhouse, offering authentic song and drum tracks, top-notch modelled guitar sounds, and user-friendly effects. It's packed with features like over 100 songs/drum tracks, 12 amp models, and seven effects, making it versatile for practice and performance. While the effects controls are somewhat limited, the overall ease-of-use and price point make it a worthy investment for guitarists. With no notable downsides highlighted, this looper is deemed an excellent choice for musicians seeking a comprehensive, portable practice solution.

positive

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4.0 out of 5

Based on 1 Review and 4 Ratings

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matthew_mccormick_minor

about 9 years ago

It's fun to play with yourself.

Robs bass of low ends. I got it for making basic loops and "to play with myself all day long". This is really made for a guitar, but the built in Spider Jam pre-amp can give the bass some character if played with properly. Improperly, you'll loose your low end... The backing drum beats can give you something to write to and are good quality, also. Supports a mic, so I'll sometiimes spit a back beat before I bass over it. I do not use this live, solely "to play with myself."