The Audio-Technica AT4050ST is a side-address stereo condenser microphone with independently operating cardioid and figure-of-eight elements configured in a Mid-Side arrangement. Designed for professional recording, broadcast and sound reinforcement, it offers switchable output modes — discrete Mid-Side signals for post-production manipulation or two internally matrixed left-right stereo outputs. Dual-diaphragm capsules maintain precise polar pattern definition across the full frequency range, while transformerless circuitry virtually eliminates low-frequency distortion.
Configuration
Mid-Side
Stereo technique
Frequency Response
20 – 20,000 Hz
Full range
Diaphragm
2 µm
Vapour-deposited gold
High-Pass Filter
80 Hz
Switchable
Pad
10 dB
Switchable
Features
✓
Independent cardioid and figure-of-eight condenser elements in Mid-Side configuration
Independent cardioid and figure-of-eight condenser elements in Mid-Side configuration
✓
Switch-selectable Mid-Side mode and two internally matrixed stereo modes
Switch-selectable Mid-Side mode and two internally matrixed stereo modes
✓
Dual-diaphragm capsules for precise polar pattern definition across the full frequency range
Dual-diaphragm capsules for precise polar pattern definition across the full frequency range
✓
Transformerless circuitry virtually eliminates low-frequency distortion
Transformerless circuitry virtually eliminates low-frequency distortion
✓
2-micron vapour-deposited gold diaphragms with five-step aging process for long-term stability
2-micron vapour-deposited gold diaphragms with five-step aging process for long-term stability
✓
Symmetrical housing assembly minimises unwanted internal reflections
Symmetrical housing assembly minimises unwanted internal reflections
✓
Integral 80 Hz high-pass filter and 10 dB pad switches
Integral 80 Hz high-pass filter and 10 dB pad switches
✓
Custom shock mount included for superior isolation
Custom shock mount included for superior isolation
Specifications
| Element | Externally polarised (DC bias) condenser |
| Stereo Technique | Mid-Side |
| Polar Patterns | Cardioid (Mid) / Figure-of-eight (Side) |
| Frequency Response | 20 – 20,000 Hz |
| Diaphragm | 2 µm vapour-deposited gold |
| High-Pass Filter | 80 Hz (switchable) |
| Pad | 10 dB (switchable) |
| Output | Transformerless, balanced |
