Audio-Technica AT4033a Cardioid Condenser Microphone

The Audio-Technica AT4033a is a professional-grade cardioid condenser microphone renowned for its exceptional transient response and clean output signals. This latest edition of the legendary AT4033 series features low-noise, symmetrical, transformerless circuitry, making it a studio classic and a favorite among bluegrass musicians. Its strong up-front presence and versatility make it suitable for a wide range of recording applications.

Designed with precision, the AT4033a incorporates a 2-micron-thick, vapor-deposited gold diaphragm that undergoes a meticulous five-step aging process, ensuring consistent performance over years of use. The floating-construction capsule assembly provides isolation from noise and vibration, while the open acoustical environment of the symmetrical housing minimizes unwanted internal reflections. Additionally, the microphone includes an 80 Hz high-pass filter to reduce ambient noise and a 10 dB pad to handle high sound pressure levels, enhancing its adaptability in various recording scenarios.

Key Features

• Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients.
• Precision-machined, nickel-plated brass, acoustic element baffle enhances element stability and optimal sensitivity.
• 2-micron-thick, vapor-deposited gold diaphragm ensures consistent performance over time.
• Floating-construction capsule assembly isolates from noise and vibration.
• Open acoustical environment minimizes unwanted internal reflections.
• State-of-the-art surface-mount electronics ensure compliance with stringent consistency and reliability standards.
• Custom shock mount provides superior isolation.

Technical Specifications

Microphones
Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Cardioid
Frequency Response: 30-20,000 Hz
Low Frequency Roll Off: 80 Hz, 12 dB/octave
Open Circuit Sensitivity: -32 dB (25.1 mV) re 1V at 1 Pa
Maximum Input Sound Level: 145 dB SPL, 1 kHz at 1% T.H.D.; 155 dB SPL, with 10 dB pad (nominal)
Noise: 17 dB SPL
Dynamic Range: 128 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio: 77 dB, 1 kHz at 1 Pa
Phantom Power Requirements: 48V DC, 3.2 mA typical
Switches: Flat, roll-off; 10 dB pad (nominal)
Weight: 13.4 oz (380 g)
Dimensions: 6.69" (170.0 mm) long, 2.10" (53.4 mm) maximum body diameter
Output Connector: Integral 3-pin XLRM-type
Accessories Included: AT8449a shock mount for 5/8"-27 threaded stands; microphone dust cover; protective carrying case
Audio-Technica Case Style: R1