Rens Heijnis custom-built audio equipment - DPA/B&K 4003 4006 noise, hum problems. It's very unusual for me to write something about technical defects of microphones, but this time I will make an
DPA 4006A Omni Mic - Pro Audio Systems
DPA d:dicate
Sonus - Pro Audio
DPA 5006A MICROPHONE KIT Surround, 5x 4006A, includes Peli case
DPA 4006A Omnidirectional Condenser Microphone - Vintage King
DPA 4006A Omni Microphone - UltraViola Audio - Europe