Swappable heads for wireless handheld transmitters, letting you change a radio mic’s voicing without replacing the system: Sennheiser’s MMD, MME and MMK capsules plus the Neumann KK204, Shure’s RPW range including BETA 58A and dual-pattern KSM9 heads, and sE Electronics’ V7 in MC1 and MC2 fittings.

Thread standards are not universal, so buy by fitting: Sennheiser capsules fit Sennheiser handhelds, Shure RPW heads fit Shure transmitters, and sE splits its V7 head into the MC1 for Shure-pattern threads and the MC2 for Sennheiser systems. Beyond fit, the choice mirrors wired mic selection. Dynamic heads like the BETA 58A and V7 shrug off stage handling and need no fussing; condenser heads such as the KSM9 and MMK 965 resolve more detail for lead vocals; supercardioid patterns tighten feedback rejection when wedges sit close. The KSM9 heads switch between cardioid and supercardioid, which is useful across changing stages. Standardising one capsule type across a fleet of transmitters keeps vocal chains consistent from gig to gig and simplifies spares.

Wired equivalents of most of these heads are in our dynamic and condenser categories if you want matching sounds on cabled channels.