The Josephson C725 is a hybrid large-diaphragm condenser microphone using a vacuum tube, solid state circuitries, and the dual-diaphragm capsule originally used in the C700 and C716 microphones. The Josephson C725 offers five switchable directional patterns controlled by a unique selector to optimise the signal path and change sensitivity. The head grille uses Josephson’s patented aluminium foam, which offers physical and electrical protection. The ultra-fine, highly open mesh offers protection from external contamination. This design provides minimal and randomised internal reflections, ensuring a clean and detailed pickup. The internal circuit uses a cascade topology with a low-noise FET for the voltage gain section and a pentode vacuum tube for the current gain stage. This combination provides the benefits of low noise of the FET and the dynamic characteristics of a vacuum tube. This is followed by a custom nickel-core transformer with independent windings for output and gain control. The C725 is powered by a PS725 power supply which can be used on 100V and 240V operations and gives control of the five direction patterns. The selector signal/dynamics characteristics offer a choice between the warmth of vacuum tube microphones and a reduced sensitivity with a more neutral tone and higher headroom. The C725 has a 3m long large Tuchel 12-contact connector that can be extended up to 50 meters. It ships in a rugged, Pelican-fitted carrying case with a dedicated power supply, line cord and protection sleeve.
