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Tube Tech
LCA 2B Dual Channel Tube VCA Compressor

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Item: N13-6245

Availability: Out of stock

LCA 2B Dual Channel Tube VCA Compressor
LCA 2B Dual Channel Tube VCA Compressor LCA 2B Dual Channel Tube VCA Compressor


The LCA 2B is an all-tube VCA compressor/limiter with two independent, linkable channels. LCA2B is a true TUBE VCA compressor, using a tube as the VCA.( Voltage controlled amplifier.) This kind of compressor is also known as a Vari-Mu compressor. TUBE-TECH LCA 2B is one of the most powerful and versatile VCA compressors in the market:LCA 2B is extremely versatile, and it works equally well on vocals, instruments and as a bus compressor. Due to its very fast and smooth attack it is also perfect for drums and percussion. There's literally nothing the LCA 2B can't handle very well: Powerful bus compression ( It's a dream used for bus compression both inserted and parallel.)

The action of the LCA2B is always easy to hear, so finding the right setting on this compressor is a not complicated. LCA2B is designed to be the TUBE-TECH equivalent of the Fairchild 670, but only in terms of action, not the actual electronics. It is designed with the Fairchild in mind, delivering similar action but retaining its transparency or high frequencies, even when pushed to the limit.) The fixed attack / release constants are duplicates of the Fairchild constants. When you want even more control, power and wildness than our famous CL1B can deliver, try the LCA 2B.The LCA2B has found its use in many top live Engineers' touring racks.


  • Two-channel unit with an independent compressor and limiter per channel
  • Unit is all tube based
  • The VCA (1 dual triode) is placed between the input transformer and the output stage (2 dual triodes)

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  • All-tube based push-pull amplifier
  • Frequency response @ -3 dB: 5 Hz to 50 kHz
  • Low noise: < -85 dBU @ 10 dB gain
  • CMRR: > 60 dB @ 10 kHz
  • Separate compressor and limiter
  • Output Gain: -6 dB to +10 dB
  • Interconnection of several compressors via two busses
  • Clickless In/Out relay
  • Conductive plastic potentiometers
  • Gold plated switches
  • Inputs and outputs are transformer balanced and fully floating
  • Linkable for stereo applications 


  • Variable ratio (1.6:1 to 20:1)
  • Variable threshold (Off to -20 dBU)
  • Continuously variable attack and release times
  • Choice between 6 presets (Fairchild) and manual attack/release control
  • LED Gain reduction display


  • Variable threshold (Off to 0 dBU)
  • Attack: 0.8 ms - release: 0.5 sec
  • Separate Limiter On/Off switch
  • LED indication of limiter action

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