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.

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.

Product Features: - The world's only "all tube based" multiband compressor design - Three bands per channel with variable crossover frequencies between bands - Stereo sidechain with variable Threshold, Ratio, Attack, Release and Gain controls for all three bands - Master Output Gain (off to +10 dB) - Balance Control (+/-1,5 dB) - LED display showing compression - Freq. response @ -3 dB: 5 Hz to 60 kHz - Low noise: < -60 dBu @10 dB gain - Potentiometers with 31 detents for Threshold, Ratio, Attach, Release and Balance - Gain controls with 12 positions gold plated switches - Frequency switches with 6 positions gold plated switches - Clickless bypass relay