The DRAPsound stereo IRs emulate a stereo microphone recording with XY technique and consist of a pair of mono IRs. For this reason they can only be used with Modelers/Profilers that allow the loading of two IR LOADER blocks on parallel chains such as AMPERO 2, (also in the STOMP and STAGE versions), FRACTAL (FM3 FM9 FXIII), Quad Cortex, HELIX, and others. However, they cannot be used on KEMPER or MOOER devices, for example, as these do not provide the possibility of using effects on parallel chains.