Audio-Technica AT4050ST - Mid-Side Stereo Condenser Microphone

The Audio-Technica AT4050ST is a side-address stereo condenser microphone with independent cardioid (mid) and figure-of-eight (side) elements. It can output discrete Mid-Side signals for adjusting stereo width after recording, or matrix them internally to left-right stereo in a 90° narrow or 127° wide mode.

It is designed for recording, broadcast and sound reinforcement. Gold diaphragms, transformerless circuitry, an 80 Hz high-pass filter and a 10 dB pad are built in. A 5 m stereo cable splits the 5-pin output to two 3-pin XLR connectors.

Key Features:

• Independent cardioid (mid) and figure-of-eight (side) elements
• Switchable 90° stereo, 127° stereo and discrete M-S modes
• Gold diaphragms and transformerless circuitry
• Handles 149 dB SPL, 159 dB SPL with the 10 dB pad
• Switchable 80 Hz high-pass filter (12 dB/octave)
• Integral 5-pin XLRM-type output with 5 m dual-XLR stereo cable
• AT8449a shock mount included; requires 48V phantom power

Audio-Technica AT4050ST — Mid-Side Stereo Condenser Microphone

• Element: Externally polarized (DC bias) condenser; independent cardioid and figure-of-eight elements
• Polar Patterns: Cardioid, figure-of-eight
• Frequency Response: 20 – 18,000 Hz
• Low-Frequency Roll-Off: 80 Hz, 12 dB/octave
• Open-Circuit Sensitivity: Stereo 90°: –42 dB (7.9 mV); Stereo 127°: –41 dB (8.9 mV); Mid: –36 dB (15.8 mV); Side: –36 dB (15.8 mV); re 1V at 1 Pa
• Impedance: 50 ohms
• Maximum Input Sound Level: Mid and Side: 149 dB SPL, 1 kHz at 1% T.H.D.; 159 dB SPL with 10 dB pad (nominal)
• Noise: Stereo 90°: 25 dB SPL; Stereo 127°: 16 dB SPL; Mid: 15 dB SPL; Side: 17 dB SPL
• Dynamic Range: Mid: 134 dB; Side: 132 dB, 1 kHz at Max SPL
• Signal-to-Noise Ratio: Stereo 90°: 69 dB; Stereo 127°: 78 dB; Mid: 79 dB; Side: 77 dB, 1 kHz at 1 Pa
• Phantom Power Requirements: 48V DC, 6.4 mA typical (total, both channels)
• Switches: 90°, 127°, M-S modes; flat, roll-off; 10 dB pad (nominal)
• Output Connector: Integral 5-pin XLRM-type
• Weight: 517 g (18.2 oz)
• Dimensions: 193.0 mm (7.60″) long, 53.4 mm (2.10″) maximum body diameter
• MPN: AT4050ST  ·  UPC: 4961310137779

- AT4050ST Stereo Condenser Microphone
- AT8449a shock mount for 5/8"-27 threaded stands
- 5/8"-27 to 3/8"-16 threaded adapter
- 5.0 m (16.5') stereo cable, 5-pin XLRF-type to two 3-pin XLRM-type
- Microphone dust cover
- Protective carrying case

Safety Data Sheet (PDF)