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  • MSRP: $180


990 USB Documentation

CardioidMXL 990 USB

Cardioid Condenser Microphone

The 990-USB is a small-diaphragm FET condenser with built-in analog-digital converter capable of delivering a 16-bit, 48-kHz digital audio stream via its USB interface. It is the USB version of the MXL 990, a popular and well-documented analog condenser microphone.

(Some of the specs below were copied from the product data provided for the 990, because MXL’s USB products are not well-documented.)

The 990 and 990USB use MXL’s standard small-diaphragm capsule, found in the 603S pencil mic and numerous others. See the 603S listing for more. It has a 17mm diaphragm, stacked on top of a 20mm backplate, within a 22mm (OD) housing.

990 USB PCBAs is typical of all the USB microphones we’ve seen, this mic’s circuit is comprised primarily of surface-mount electronics, including IC chips.

PCB photos courtesy John Williams

Permalink: MXL 990-USB


Pickup Patterns Pads & Filters
Cardioid (15 mV/Pa; 30 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 17.1mm
Capsule diameter: 19.9mm
Diaphragm gauge: 6 microns
n/a Max SPL: 130 dB
Weight Length Max Diameter Interface(s)
544g (19.19oz) 130mm (5.12'') 60mm (2.36'')
  • USB (1)
Power Specifications

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