This unit was one of the first original units produced. It was used as my demonstrator when I was importing the units into Australia. Slight rack wear - as per photos. The Alta Moda Unicomp audio compressor combines the best features of both modern and classic audio compressors into a single, dual-mono unit.  At its heart is a unique gain cell / side chain combination which gives the Unicomp its own distinctive sonic character.  The Unicomp’s comprehensive set of side chain features gives it true versatility and accuracy which make the unit superbly suited for tracking, mixing and mastering applications. The Unicomp boasts a fully discrete, Class A, high voltage minimalist audio path.  The amplifiers are DC servo-coupled, eliminating all coupling capacitors in the signal path. The side chain features a high accuracy logarithmic-scaled detector, with a choice of operating in RMS or peak rectifier modes.  The Unicomp also allows the user, with a single switch, to change the compressor topology from a modern and accurate feed-forward detection scheme, to the classic and more colorful feedback approach; completely changing the sonic personality of the unit. The Unicomp’s personality is further changed with the addition of the warmth control.  Turning this control adds rich, second harmonic distortion to the signal that increases as compression increases, adding even more character to the sound.  A switchable filter changes the contour of the affected signal, useful when processing more complex signals, such as mixes. Another unusual feature of the unit is the blend control.  The blend control allows the operator to mix unprocessed signal back into the compressor’s output path.  This gives one the ability to create a more subtle compression effect on tracks such as vocals, or for blending back dry signal when heavy buss compression effects such as drum sub mixes are being processed.  A high pass filter is included which blends only the higher audio frequencies back into the output path. Alta Moda Unicomp Compressor Features     Class A high voltage, discrete capacitor-free signal path     Electronically balanced input, impedance balanced, single-ended output     FET-based wide dynamic range gain cell eliminates the need for an input control     Log-scaled detector responds more like the human ear than linear detection systems     Choice of RMS (excellent for overall level reduction) or peak mode (great for catching fast transients)     Threshold knee control – can switch between hard knee for instantaneous gain reduction, or soft knee mode, for a subtle engaging of compression over several dB     Continuously variable threshold, ratio, attack and release controls     Switchable side chain insert for keying and detector signal equalization     Feed-forward/feedback – switches between the basic topologies.  Feed-forward is precise and can yield high compression ratios.  Feedback mode is more subtle, and can yield interesting compression artefacts, including the shifting of attack and release time constants.     Warmth control – adds 2nd harmonic distortion, increasing as compression increases     Warmth filter – high pass filter bringing out more mid-range frequency distortion     Blend – mixes dry, input signal back into output path     Blend filter- high pass filter returns only dry, upper frequencies back into output     Dual mono/stereo – completely independent channels can be linked for stereo operation     Side chain L and R are summed after the rectifiers     Gain makeup – increases output amplifier level from unity to compensate for lost level when compressing     High-quality construction – premium components for long life. If interested -, let me know you location and I will get an estimate on the postage / freight