The OC18 uses the single-diaphragm version of the CKR12 capsule, which — in concert with the microphone’s custom electronic circuitry — delivers excellent results when used for vocals, acoustic guitar, piano, drum overheads, strings, brass, percussion, and room capture. What’s more, the OC18’s robust, native 148dB maximum SPL capability — further increased by the inclusion of selectable -10dB and -20dB pads — also makes it ideal for louder sources such as tom toms and electric guitar cabinets.