NEUMANN KM54AC VINTAGE MICROPHONE

4 000.-

23.05.2026

1800, Vevey

Hi,

Up for sale a beautiful vintage Neumann KM54AC microphone all original kit. This microphone has an early serial number and sounds truly like a champion. Released in 1954 it was meant to rival the legendary U47 in a more compact version. The nickel membrane capsule combined with the AC701K tube + the BV13 transformer is a magical combination.

This kit is composed of

-Neumann KM54AC microphone (#395)
(the C in name means Neumann upgraded it to "cathode bias" during it's life time, resulting in 4db less signal to noise ratio). Basically the better version of KM54.

-Original Neumann KM54 blue case

-Original Neumann NKM PSU (rare) in beautiful condition

- New Andreas Grosser KM54 cable (or i can change for a vintage neumann/ Belden silver cable for 200- extra)

Everything works perfect, sounds simply awesome, big and lush.

Most KM54s for sale have been butchered and rarely they come with all original articles. The Nickel membrane and ac701k are quite a delicate combination so it's important to try if possible and or buy from thrustworthy source. This one sounds top notch and is put up for sale for a reasonnable price .

If your a collector, i also have another one in prestine condition with telefunken badge.

Hit me up if you have questions or anything

I also will soon put other adds of vintage studio goodies for sale (Vintage Neve, neumann, AKG, Telefunken, urei etc etc).