Audio Technica AT4040

A Modern Classic in the Audio-Technica Professional Range

Positioned in the "AT40" series, the AT4040 has established itself as a reliable choice for studios seeking a dependable and consistent large-diaphragm microphone. It combines the precision of a polarized capsule with refined electronics to deliver a neutral signature that easily integrates into mixes, from vocals to acoustic instruments.

Who Is It For and What Are Its Uses?

Ideal for singers, podcasters, voice-over artists, and musicians in both home and professional studios, the AT4040 excels on vocals, acoustic guitars, pianos, overheads, woodwinds, and brass. Its cardioid polar pattern ensures good ambient noise rejection, while the high-pass filter and pad provide necessary control for demanding recordings.

Design and Key Features

Large Diaphragm and Tonal Accuracy

The diaphragm tension is calibrated for a smooth response across the entire spectrum (20 Hz-20 kHz). The transformerless circuit minimizes bass distortion and preserves transients, ensuring crisp attacks and tight lows.

Versatility and Source Control

The 80 Hz (12 dB/octave) high-pass filter reduces footstep noise, breath sounds, and proximity effect. The -10 dB pad extends the headroom for percussion, amplifiers, and powerful brass instruments, while the low self-noise maintains detail even in the softest passages.

Technical specifications

Frequency response - start	20 Hz	Capsule	Large Diaphragm
Frequency response - end	20 kHz	Connection	XLR
Category	studio microphone	Color	Black
Directivity	cardioid

Capsule Type	Polarized condenser	Max SPL	145 dB SPL, 1 kHz at 1% THD
Polar Pattern	Cardioid	Max SPL with Pad	155 dB SPL (nominal)
Frequency Response	20 - 20,000 Hz	Dynamic Range (typical)	133 dB, 1 kHz at max SPL
Low-cut Filter	80 Hz, 12 dB/octave	Self-Noise	12 dB SPL
Pad	-10 dB	Signal-to-Noise Ratio	82 dB, 1 kHz/Pa
Switches	Flat, low-cut filter; -10 dB pad	Phantom Power	48 V DC, 4.2 mA (typical)
Output Level	-32 dB (25.1 mV) re 1 V/Pa	Dimensions	53 x 170 mm
Output Impedance	100 ohms	Weight	360 g