Simon Bradley (Bradders) has written an article for Music Radar in which Brian May’s long-standing technician Pete Malandrone (Mallers) discusses his current touring rig. This consists of a strap mounted KAT treble booster and Sennheiser SK-500 transmitter, a Sennheiser EW500 G-2 receiver, a custom splitter designed by Mike Hill, Dunlop Crybaby DCR-2SR rack mount wah wah and TC Electronic G-Major 2 rackmount effects units. Check it out at the link below:
https://www.musicradar.com/news/brian-may-rig-tour-brians-not-going-to-use-a-fractal-rackmount-and-in-ears-he-wants-to-hear-three-screaming-ac30s-behind-him-thumping-him-in-the-back