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  • TUB-CL2A

    Tube Tech CL2A

    The TUBE-TECH CL2A Dual Optical Compressor is based on the legendary and now industry standard 'CL1B'.  Other than the CL2A being stereo, some other sonic differences do exist between the two units.  For example, CL2A features a different optical element, with a little more "soft"or "rounded" action compared to the element in the CL1B.


        The TUBE-TECH CL 2A is an all-tube optical compressor with two independent, linkable channels. 

        CL 2A is a great compressor on all sources, and it is widely known as an excellent “problem solver” when delicate gain control is called for.

        Use it on keyboards, guitars, vocals or even on the mix buss - the result is always musical, smooth and transparent. Among engineers, the CL 2A is loved because of its ability to keep instruments at their right place in the mix, while still retaining their dynamics.   

        David Morgan FOH Mixer: 

        Steely Dan, Simon & Garfunkel, Lionel Ritchie, Whitney Houston,James Taylor, etc...
        "My new love is the Tube-Tech CL-2A for vocals, I got introduced to it years ago when I saw Clive Franks using it on Elton John. Elton''s voice sounded wonderful, and I was looking at the compressor hitting about four or five dB of compression and couldn''t hear it at all. What it added to a vocal mic was exactly what we want in live music, so I tried it on Lionel Richie. I''ve been using it on lead vocals ever since." 

        CL 2A is a two channel all-tube opto compressor, featuring two independent channels. The optical gain reduction element is placed after the input transformer and followed by an all tube-based output amplifier with a +10 dB gain. A link switch is provided for use of the two separate compressors in stereo mode or for linking several compressors together. 

        Both Input and Output are balanced and have fully floating transformers with a static screen. 

        The power supply and the sidechain circuit are based on solid state designs. 

        With the exception of the anode voltage for the output stage, all DC voltages are stabilized.


        • Low-distortion optical gain reduction element
        • All-tube based push-pull amplifier
        • Frequency response @ -3 dB: 5 Hz to 60 kHz
        • Low noise: < -80 dBU @ 10 dB gain
        • CMRR: > 60 dB @ 10 kHz
        • Variable ratio from 1.5:1 to 10:1
        • Continuously variable attack and release times
        • Output gain: Off to +10 dBU
        • Variable threshold: Off to -20 dBU
        • VU meters show output or compression
        • Linkable for stereo applications
        • Interconnection of several compressors via two busses
        • Clickless In/Out relay
        • Conductive plastic potentiometers
        • Gold plated switches
        • Input and output are transformer balanced and fully floating
    Need more info on the TUBE-TECH CL2A? Click HERE for the manufacturer's website >>>