Black Lion Audio B172A, Mono Compressor, Hybrid compressor with FET circuit and T4BLA optocoupler, FET compressor from the Seventeen based on a legendary model, Compressor order can be selected or dual mono mode, Cinemag LA-2A input transformer, Optimised circuit with new output transformer, Infinitely variable attack and release, Link connection for coupling two devices for stereo operation, Frequency range: 15 Hz - 20 kHz, +/- 1 dB, THD + N: 0.3%, Inputs: 2x XLR (balanced), 2x jack (balanced), Outputs: 2x XLR (balanced), 2x jack (balanced), Link: 2x Jack (unbalanced), Power supply: 115/230 VAC internal, Height: 2 U, Width: 19"", Depth: 250 mm, Weight: 8 kg