Vintage B&K Brüel & Kjær 4006 Stereo Pair OMNI SDC Mic w/ Case & Charts (Former DPA)

Vintage B&K 4006 P48 stereo pair with original calibration charts (1991), complete grids and cases — fully tested and ready for professional classical and acoustic recording use. I purchased this B&K 4006 stereo pair a few years ago from a Japanese recording engineer who had kept them in storage and hardly used them. Since then they have been used only a handful of times in my private home studio for acoustic and classical recording projects, and have spent most of their time safely stored in their original wooden cases. I’m now simplifying my setup and letting this pair go to someone who can give them more regular use. They are in excellent working condition and come with their original accessories and individual calibration charts dated 18 Feb 1991. International shipping via UPS (fully insured, professional packing). Actual shipping cost reduced due to compact size. Feel free to message me if you need any additional info or specific measurements.Vintage professional microphones, sold as-is and as described. Please review all photos carefully to confirm cosmetic condition. Overview Classic Brüel & Kjær 4006 omnidirectional condenser microphone stereo pair Early 1990s P48 studio version (not the 130V measurement type) Individual calibration charts dated 18 Feb 1991 Ideal for classical, choral, chamber music, piano, ambience, etc. Key Features True omni small-diaphragm condensers with the classic B&K sound P48 phantom powered – works from any standard mic preamp Original B&K wooden cases and accessories Matching pair: serial numbers 1533908 and 1533897 Condition Fully functional: both mics pass audio cleanly, no hum, crackle or intermittent noise Output levels are closely matched and well within practical tolerance for professional stereo recording. In real classical and acoustic sessions, no audible imbalance has been observed. Capsules are clean; bodies show only minor cosmetic wear from normal use Wooden boxes have scratches and marks from handling (see photos); hinges and latches work properly Used mainly in a private, non-smoking home studio, stored in the cases when not in use Included 2 × Brüel & Kjær 4006 omni condenser microphones (P48 version) 2 × original wooden presentation/storage boxes 2 × original individual calibration charts 2 × original mic clips/holders 2 × black “diffuse field” grids 2 × nose-cone style “free field” grids with their plastic containers Calibration Highlights (from the original B&K charts – see photos) Frequency response: 20 Hz – 20 kHz (±2 dB) Equivalent noise level: 16 dB(A) re. 20 µPa Dynamic range: >120 dB Sensitivity at 250 Hz: approx. 8.4 mV/Pa and 9.0 mV/Pa