- AEA KU5A; active ribbon microphone; polar pattern: supercardioid; 1.8 µm thin corrugated aluminum ribbon (14 mm x 290 mm); reduced proximity effect; perfect for speech vocals and instrument pickup; frequency range: 30 Hz to 14 kHz; maximum SPL: 135 dB SPL (1% THD EUR 1799.00 - See more - Buy online