once I measured an AKG C4000 and an AKG 820 Tube mic in a much big anechoic chammber (9*11*13 meters), the frequency response of AKG 820 tube I got was similar as the spec on 820 user-manual. The mic was introduced in 1993, and later replaced in AKG’s lineup with the C 3000 B, a single-capsule electret condenser mic that had little in common with the original but a name and body shape. 00 AKG P420 Studio Condenser Recording Podcasting … Tags: akg; c3000; microphones; pro audio; Audio-Technica AT5047: The New AT5047 … AKG C3000B worth it? Discussion in 'Microphones (live or studio)' started by thevessels, Aug 26, 2003. To further confuse matters, the C 3000 B was relaunched in 2012 as the “C3000… I checked with AKG… but regarding the C4000, the measuring result I got was much different from the spec on the C4000 user-manual. The C3000 high-performance, large-diaphragm condenser microphone has been a standard for live applications and studio recording for almost two decades. It is an excellent choice for vocals, electric … AKG Pro Audio C3000 High-Performance Large-Diaphragm Condenser Microphone 4 out of 5 stars 27 $279.00 $ 279 .