can be tweaked with the Drive, Bass, Mid
and Treble controls.
and playing these songs with tones and
effects that are very similar to the originals.
I’m a big believer in presets. I have no problem with companies that spend a lot of time
and money to create good sounding presets—they do all the hard work for you! It’s
a big time saver, and most of the time the
presets are ideas that I would never come up
with on my own. With the JM4, I was really
impressed with the Artist presets. There
are over 200 presets that were dialed in by
a number of rock star guitarists—everyone
from Albert Lee to INXS to Slipknot. The
tonal variety was plentiful and there seems
to be something for every taste. Some of the
artists recreated the unique tones from their
records, while others explored and created
new sounds. I found every sound fresh and
innovative, and they were fun to play with.
Each of these presets can be modified and
saved to one of the 36 User preset locations.
Of course the main feature is the looper. The
JM4 manual provides a couple of tutorials to
get you up and running right away. I wanted
to create a four-bar loop with drums as a
foundation. I simply picked a groove from
the drums menu, armed the guitar record
button and pressed Record. The concept is
simple: after you hit record, there is a count
in, and then you play a phrase on your guitar
for four bars. On the downbeat of bar five,
hit Record again and it will loop back to the
beginning. You have then set your four-bar
phrase, which will loop over and over. To add
another overdub, you simply press Record
again and play, and hit the button again at
the end of your phrase. You can then add
additional overdubs for each repeat of the
loop. You can also tap Undo if you don’t like
a phrase you just recorded. In minutes you
can become a loop master!
The Final Mojo
The Line 6 JM4 is a useful tool for any
guitarist. A casual or amateur guitarist will
enjoy practicing and jamming with the JM4
and sharpening his or her skills. This is also
a great tool for professional guitarists who
want to keep their chops up in between
gigs. The abundance of looping capabilities,
tracks, sounds and effects will keep a guitarist busy and happy for hours!
The Style presets are great as well. These
tones are based on the top 200 guitar rock
songs of all time, from the fifties all the way
to today. For example, if you want the tone
that Ritchie Blackmore had on “Smoke on
the Water,” it’s here. If you want Prince’s
clean sound from “Purple Rain,” it’s here
also! The presets are actually labeled by the
song names that these guitar tones are modeling. I had a great time scrolling through
You want a loop pedal with added
sound options, effects and features.
You’d rather have a loop pedal with
no other functions or extras.
Rating... 4. 5
Head online to hear sound
samples of the JM4 in action at