Neumann KM 54 Cardioid Pencil Tube Condenser Microphone. The KM 54 was a Cardioid pencil condenser microphone with a tube amplifier circuit. It was the second of Neumann's "miniature microphone" series, following the omni KM83; the model name 'KM' stands for Kleine Mikrofon.. The tube in the KM 54 was a Telefunken AC 701, a subminiature triode also used in the M 49 and M 50, and.. Neumann KM54 Tube Microphone Pair #4070/4075 (Vintage) Original nickel capsules and AC701 tubes give you a rich and musical tone, with present mids and open top end. Very useful on strings, acoustic instruments, backing vocal ensembles, etc. History Following on the huge success of their flagshi.
Neumann KM54 Microphone + Power Supply. Opens in a new window or tab. Pre-Owned. $4,999.99. or Best Offer +$35.00 delivery. Sponsored. gtrmichael (886) 100%. Neumann KM54a Cardioid Tube Microphone Stereo Pair Vintage Mics Rare KM 54a km54. Opens in a new window or tab. Pre-Owned. $8,995.00. or Best Offer. KM is the acronym for "kleinmikrophon" meaning "little microphone". In 1953 Georg Neumann GmbH introduced the "KM" family with the KM 53, a miniaturized pressure (omnidirectional) condenser microphone. The professional market request was for microphones offering the same quality of the U 47, M 49 and M50 with a very small size. These microphones were aimed at television broadcast and similar.