Santa Cruz, CA (October 11, 2017)—Josephson Engineering is shipping its first production model to use a vacuum tube: the C725 hybrid vacuum-tube microphone.

Developed for more than five years, the C725 aims to provide smooth, warm sound without loss of detail while being able capture subtle musical nuances. The company developed a circuit using the cascode topology already used in most of its other mics, but with an FET and a tube doing the work rather than two FETs as with other models. The capsule, which is the same dual-diaphragm multi-chamber design used in the C700 and C716, is manufactured in-house.

Related Articles

Apogee Does Windows

Baptist Church Rolls with Renkus

Josephson Debuts C716 Mic

The C725 uses Josephson Engineering’s metal foam grille to provide shielding and protection for the capsule with minimal internal reflections.

The circuit inside the microphone uses an FET and a vacuum tube in cascode configuration, and a custom nickel-core output transformer, allowing the low noise of the FET to be combined with the dynamic characteristics of the tube.

The microphone comes with a dedicated power supply and Pelican shipping case and is available from Josephson Engineering dealers worldwide.

Josephson Engineering