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.
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.