Technical data

22 P820
Description
The P820 TUBE is a high quality, true condenser microphone with a 1" dual
large-diaphragm transducer.
What sets it apart from other condenser microphones is that it uses a
vacuum-tube preamplifier. Unlike conventional solid-state electronics, a tube
preamplifier adds even-order harmonics to the signal. Although these are low in
level, they create a rich, warm, three-dimensional sound. This characteristic in
conjunction with the typical response of the large-diaphragm transducer will give
your recordings a degree of warmth and "musicality" that is difficult to achieve
with solid-state microphones.
The microphone incorporates a carefully selected ECC 83 tube. If the tube needs
replacing, you may alternatively use a 12AX7 tube. This type is similar to the
ECC 83.
Other features of the P820 TUBE include:
 Selectable polar patterns: The microphone's transducer uses a dual
diaphragm. This sophisticated technology allows you to select the optimum
polar pattern (cardioid, omnidirectional, figure eight, and six intermediate
patterns) for every application.
 Gold-sputtered diaphragm: The diaphragm is made of a plastic foil that is
gold-sputtered on one side only to prevent shorting to the back electrode
even at extremely high sound pressure levels.
 All-metal body: The all-metal body adds to the rejection of RF interference
so you can use the microphone near transmitter stations and along with
wireless microphones or other communications equipment. The extremely
rugged, heavy body and sturdy front grill protect the microphone from
damage from tough handling on stage.
 High headroom: Capable of handling sound pressure levels up to 155 dB
and built to resist high temperatures and humidity, the microphone will give
excellent results in a wide range of applications.
Microphone