AudioTechnica ATM75CH Cardioid Condenser Headworn Microphone

Audio-Technica's ATM75CH is a cardioid condenser headworn microphone purpose-built for hands-free vocal work in wireless DJ and live performance contexts. The permanently polarized fixed-charge back plate delivers professional-grade signal conditioning across a 100–13,000 Hz range, with screw-down 4-pin cH-style termination for seamless integration with Audio-Technica body-pack transmitters. The low-visibility headband and pivot-mounted flexible boom accommodate left or right positioning, keeping sightlines clear during performance.

Signal integrity remains strong across both phantom and battery power modes. Phantom-powered operation yields −51 dB sensitivity and 132 dB SPL handling at 1 kHz, whilst battery mode (single 1.5V AA cell) sustains 2000 hours typical runtime on 0.4 mA draw. The cardioid polar pattern isolates desired vocal source and rejects ambient noise effectively on crowded club or festival stages. Included accessories comprise AT8139L and AT8139S windscreens, AT8439 clothing clip, and 1.4 m permanently attached 2-conductor shielded cable. Microphone body weighs just 60 g, minimising head fatigue during extended sets.

This headset architecture suits MC work, live electronic performance, or vocal-driven club sets where mobility and hands-free operation prove essential. The low-frequency roll-off switch (80 Hz, 18 dB/octave on wired variants) tames proximity bass bloom and stage rumble, crucial for maintaining clarity in high-SPL venues. Cardioid rejection characteristics work particularly well in multi-speaker environments where feedback rejection directly impacts mix stability.

Features

• Cardioid condenser element, fixed-charge back plate, permanently polarized construction
• 100–13,000 Hz frequency response; 80 Hz high-pass roll-off (wired models)
• Phantom power: −51 dB sensitivity, 132 dB SPL maximum input
• Battery mode: −53 dB sensitivity, 121 dB SPL; 2000-hour AA cell runtime
• Screw-down 4-pin cH-style wireless connector for Audio-Technica body packs
• 1.4 m permanently attached miniature shielded cable, 2.8 mm diameter
• Pivot-mounted flexible boom fits left or right; 60 g microphone weight
• Includes AT8139L/S windscreens, AT8439 clip, battery, power module (wired only)