The AKG – C451E/EB is part of Condenser Microphone Modular System, which had three bodies and seven heads). Pencil mic. E indicates XLR connection on base.
- principle: valve condenser
- polar patterns: CK1 capsules are cardioid, CK3 are omni.
- pads: no
- bass roll off: B indicates three position bass roll off selector with choice of full bandwidth, -14 dB per octave starting from 75 Hz, or from 150 Hz.
- freq response: 20 Hz to 20 kHz.