SUPERLUX S502 Stereo Condenser Recording Microphone. The Superlux S502 Stereo microphone combines a pair of matched cardioid capsules in an ORTF arrangement. The ORTF stereo technique uses two first order cardioid microphones with a spacing of 17 cm between the microphone diaphragms, and with a 110° angle between the capsules. This technique is well suited […]... Read More