AKG D40 Professional Dynamic Instrument Microphone

The AKG D40 is a compact, lightweight dynamic microphone engineered for close-miking drums, percussion, and amplified instruments. Its ergonomic 104mm body and integrated stand adapter make it equally at home on a snare drum or guitar cabinet, delivering consistent polar control and minimal handling noise in live and studio settings.

Design & Build Quality

Constructed from metal with a distinctive dark stage blue finish, this microphone weighs just 245g and measures 104mm in length with a 44mm diameter—making it unobtrusive on stage or in tight studio spaces. The patented Varimotion diaphragm uses unique laminated material to damp high-frequency resonance peaks, while the wire-mesh cap protects the transducer from impacts and debris.

Audio Performance & Specifications

The cardioid polar pattern provides focused pickup with excellent rejection of off-axis sound, ideal for isolating individual sources in dense arrangements. Peak output capability reaches 156 dB SPL at 3% THD, and the 50–20,000 Hz frequency response with 2.5 mV/Pa sensitivity captures full instrumental detail without coloration.

Key Features

• Cardioid polar pattern for focused, isolated pickup
• Frequency bandwidth: 50 to 20,000 Hz
• Sensitivity: 2.5 mV/Pa
• Maximum SPL: 147 dB (1% THD) / 156 dB (3% THD)
• Balanced 3-pin XLR male output
• Electrical impedance ≥ 600 Ohms
• Recommended load impedance ≥ 2,000 Ohms
• Equivalent noise level: 18 dB(A)
• Patented Varimotion diaphragm with laminated damping material
• Metal body with dark stage blue finish
• Compact dimensions: 104mm length × 44mm diameter
• Includes integrated stand adapter and H440 mounting bracket

The D40 delivers professional-grade isolation and SPL handling in a rugged, portable package suitable for touring musicians and recording engineers alike.