Rack-mountable vintage-style compressor with signal path that utilizes only discrete components like resistors, capacitors and transistors. Its line input and output are transformer balanced and the unit is also ready for transformer upgrade. The class-A circuit used in the unit is similar to the one in the classic 2254 compressor that was designed in 1969. It quickly became a legend due to its totally unique sound character that is warm, smooth, sweet and musical. The compressor uses a diode bridge as the gain control element, a method that is revered for its smooth way of operation. Some of the most sought after vintage compressor designs, like the 2254, 2264, 33609, Siemens and EMI used the same basic design. The controls are very flexible covering broad ranges of Ratio, Attack and Release times. The meter can show input or output level or gain reduction. It is also possible to link two units for stereo operation. The compressor provides XLR/TSR connection and uses external power supply to avoid interaction with the audio circuitry and the transformers. A 230V power adaptor is included.