Microphone
B&K 4188-A-021
ACO Preamplifier integrated microphone
ACO 7147A/4152
Audio-technica AT-VD6
https://www.audio-technica.co.jp/smt/atj/show_model.php?modelId=120
ACO 7147A/4152
https://www.audio-technica.co.jp/smt/atj/show_model.php?modelId=120