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Audio Technica AT4900b-48 Preamplifier for AT40 Series

Audio Technica EC97486
0000033450| Audio Technica AT4900b-48 Preamplifier for AT40 Series
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About the Audio Technica AT4900b-48 Preamplifier for AT40 Series

This versatile modular microphones may be used with confidence in a wide variety of professional miking applications. Featuring direct-coupled balanced outputs for clean signals in high-output conditions, the microphone is totally free of the distortion associated with conventional transformer-coupled outputs. And its fast response to transients contributes to the open, transparent reproduction of even the most difficult-to-capture instruments.

The AT4900b-48 is a body only. You need to choose interchangeable capsule available in cardioid (AT4051b-EL), omni (AT4049b-EL) and hypercardioid (AT4053b-EL).

  • Specially engineered to meet the most critical acoustic requirements of professional recording, broadcast and sound reinforcement
  • Omnidirectional polar pattern provides maximum ambient pickup
  • Direct-coupled, balanced output results in a clean signal even under high-output conditions
  • Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients
  • Switchable 80 Hz hi-pass filter and 10 dB pad
  • Rugged turned-brass microphone housing for enduring dependability
  • State-of-the-art design and manufacturing techniques ensure compliance with Audio-Technica’s stringent consistency and reliability standards



Externally polarized (DC bias) condenser

Low Frequency Roll Off

80 Hz, 18 dB/octave


Flat, roll-off; 10 dB pad (nominal)

Phantom Power Requirements

48V DC, 4.8 mA typical




155.0 mm long, 21.0 mm maximum body diameter

Output Connector

Integral 3-pin XLRM-type


AT8405a stand clamp for 5/8″-27 threaded stands; protective carrying case

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