The U7 is a Vacuum Tube Condenser Microphone powered by the supplied N7
PSU which is hand built in the USA operating on 110/220v.
The U7 is a fixed cardioid microphone featuring a 6-micron
gold-evaporated Mylar capsule which is hand built and hand tuned for
maximum sensitivity, long life, superb detail and tone. The capsule
also utilities a specially designed gold-plated centre element
enhancing the transient response and creating a gentle rise in the
upper frequencies. The body is hand-tooled from brass.
The U7 utilities a hand tested NOS GE 6072 vacuum tube chosen for its
low distortion, superior signal to noise ratio and minimum sensitivity
to mechanical vibration. It also employs a carefully engineered, custom
wound output transformer.