They are not real. They are just stage props modeled after the marshall amp. They're there to give the notion that Justice is one badass duo. But yeah, they're props. Justice uses the sound system provided by the venue.
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Marshall, I believe.
I'm pretty sure Fall Out Boy use Marshall amps.
The only amps a7x uses is the Marshall jcm800
He uses marshall amps
The Jonas Brothers use Marshall amps. If you watch some of their concert and music vids you can see they use marshall half stacks. Some have some pretty massive cabs.
Most Bands use Marshall amplifiers and Bullet for your valentine are one of them
Marshall. Look at AC/DC live music videos on youtube and look on the stage at the amps.
Alex Lifeson of Rush has used various amps throughout his career, including Hughes & Kettner, Marshall and Fender. One of his most famous setups included Marshall amps, particularly the Marshall 100-watt head.
Chief Justice Roger B. Taney replaced Chief Justice John Marshall after Marshall's death in 1835.
marshall
Justice John Marshall Harlan II (1955-1971) was the grandson of Justice John Marshall Harlan (1877-1911). Interestingly, both men were deliberately named after the great Chief Justice John Marshall (1801-1835).
Guitar amps usually amplify E guitars.