Valve Microphone -HST-11A -tube.

Valve microphone for sale.
The microphone is not working. No sound at all from the mic. I believe the power supply is working and that this is a wiring problem within the mic, however i am not 100% sure,so no guarantees offered!
Cosmetically the mic and power supply are in perfect condition.
Collection in person preferred, but will post within the UK.
Includes 7 pin mic cable mic cradle, power supply, bag style mic case mic wind shield
Specs Below;
---- Please see my other listings, I am selling numerous studio equipment spares or repairs. I previously worked as a studio technician and therefore have a number of items which i have never got round to fixing. Unfortunately i don't have time anymore i hope someone else will be able to make use of these items.
Manufacturer Specs; High Performance Multi-pattern Wide Diaphragm Tube Condenser MIC Frequency Range: 20Hz-- 20kHz Sensitivity: 25mv/Pa +2 dB (0dB=1V/Pa 1000Hz) Polar Pattern: Multi-patterns including Cardioid, Omni, Figure 8 etc nine different selectable polar patterns. 12dB(300-3000Hz) 15 dB (1000Hz) Impedance: <200 Ohm Equivalent Noise Level: 20dB ( A Weighted) Max: SPL 12 dB for 0. 5% THD Power Requirement: Dedicated power supply. Connector: 7-Pin XLR O. D: 46mm x 240mm