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Various SMC2BM Users

SMC2B M Downloads

SMC 2BM Multiband Mastering Opto Compressor

SMC2BM Description

TUBE-TECH SMC2BM is the mastering version of the famous SMC2B Stereo Multiband Compressor

On SMC2BM all audio controls feature High Quality switches,fitted with precision resistors, to ensure extreme accuracy in settings and recals.

The SMC2BM has become one of the favorite mixing/mastering compressors  for many top mastering engineers around the world.

The sound of SMC2BM is the same as SMC2B.  Please read "SMC2B Description" 


SMC2BM - Selected User Statements

Alexis Bardinet, GLOBE AUDIO MASTERING, Bordeaux, France

 "We already own a Manley and a Maselec compressor in our main Studio and we wanted an analog multiband compressor with character... The digital multiband works well but without the "life" and the"breath" of an analog one, it's so clinical...
We arranged a test listening of the TUBE-TECH SMC2BM and we decided never to give it back ! It's just perfect for mastering... This box have an incredible sound, very musical with great bass frequencies and without the usual hardness of other compressors."







Read more Uses Statements ( SMC2B )



SMC2BM - Sound

The sound of the SMC2B and the SMC2BM is the same, so we have placed all Player files

on the SMC2B page!


Read more


Listen to SMC2B(M)

SMC2BM Technical Features


  • The World’s only all-tube multiband compressor design
  • Low distortion optical gain reduction elements
  • Frequency response: @ -3 dB: 5 Hz to 60 kHz
  • Low noise: < -60 dBU @ 10 dB gain
  • CMRR: > 60 dB @ 10 kHz
  • Three bands per channel with variable crossover frequencies
  • Variable threshold, ratio, attack and release for all three bands
  • Master output gain: Off to +10 dB
  • Balance Control (+/-1,5 dB)
  • LED display shows compression
  • Clickless In/Out relay
  • Conductive plastic potentiometers
  • Gain Control for each band
  • Gold plated switches (SMC 2BM
  • In- and outputs are transformer balanced and fully floating

SMC2BM Technical Description

The TUBE-TECH SMC 2BM Stereo Multiband Compressor features three independent

optical stereo compressors.

The signal is divided into three bands (Low, Mid & High) by 6 dB/octave x-over networks with 12 selectable frequencies: 60 – 1200 Hz for Low/Mid band and 6 selectable frequencies: 1,2 – 6,0 kHz for the Mid/High band.

Switchable crossover points ensure precise control of all three bands of opto-compression.

Independent band specific Threshold, Ratio, Attack, Release & Gain parameters make the SMC 2BM as flexible as it is accurate.
Gain controls are fitted with 12 position gold plated switches with 1dB/step. Threshold, Ratio, Attack, Release and Balance controls are fitted with potentiometers with 31 detents.


The design of the x-over networks optimizes the summing of all three bands, resulting in a flat frequency response (within +/-0,25 dB), when the gain controls for each band are set at the same level.

The three compressors feature Threshold, Ratio, Attack, Release and Gain and a display showing gain reduction. Master levels are set with Output Gain and Balance controls.

Both Input and Output are balanced and have fully floating transformers with a static screen. The power supply and the sidechain circuit is based on a solid state circuit. With the exception of the output stage all DC voltages are stabilised.



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