"Myung uses a Shure UR4D wireless. From there the signal goes into a switcher, then to a Radial JD-7 splitter that splits into three signals. The first goes straight to a Demeter Tube DI, while the second goes through a Demeter Optical Compressor, Demeter Preamp, then Demeter VTHF-300M into a Radial JDX speaker simulator," states [this](http://www.premierguitar.com/articles/Rig_Rundown_Dream_Theaters_John_Myung) rig rundown, by Premier Guitar.more
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