R3 235.82
(R3 721.19 incl VAT)
Short description:

2 Channel Active Converter -10dB RCA/Mini TRS to 4dB XLRM w/ Gain Control


The LM2B from Whirlwind is a two-channel, level matching device, housed in a compact and robust enclosure. The unit provides high quality conversion of analog audio levels and impedances between -10dBV "consumer/semi-pro" unbalanced equipment, and +4dBm balanced professional equipment.

The LM2B can amplify an unbalanced signal by up to 14dB, and sports dual, adjustable gain controls, on the front panel. Both controls are marked with positions that represent nominal conversion gain settings. The unit is powered by an included external 24VDC power supply.


Key Features:

  • Two-channel, unbalanced to balanced audio line level converter
  • Unbalanced connections include gold plated RCAs and a stereo, 3.5mm mini connector
  • Balanced connectors include gold-plated XLRs
  • Individual gain controls for fine-tuning levels
  • Active circuitry, powered by an included external power supply

Frequency Response

20Hz to 20kHz, +/-0.17dBV @ unity gain

Noise Level

-100.3dBV, @ unity gain

Maximum Input Level


Maximum Output Level


Input Connectors

2 x RCA phono


1 x 1/8" TRS mini-stereo phone

Output Connectors

2 x XLR

Input Impedance

10kΩ, unbalanced

Output Impedance

100Ω, balanced

Dimensions (WxDxH)

4.31 x 2.75 x 1.75" (109 x 70 x 45 mm)


Not specified by manufacturer

  • Whirlwind LM2B - 2-Channel Unbalanced to Balanced Line Level Converter
  • External Power Supply
  • Two (2) Year Warranty
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