Valve condenser microphone with dual 1" variable pattern capsule. Capsule with large 1" powder-coated gold diaphragm and internal suspension. Ultra low noise. Wide dynamic range. Class "A" valve circuit. Hand-selected and graduated 6922 double triode valve. Dedicated power supply. Heavy duty welded and heat treated steel mesh head. Continuously variable polar patterns. From omnidirectional to cardioid to figure 8, controlled at the power supply. 10-year extended warranty upon registration of the microphone.