Tiptop Audio Z4000 NS is an envelope module for modular synthesizers in Eurorack format. The module creates a classic 4-pole envelope, where each segment can be set manually with buttons or dynamically under voltage regulation. The first 0-50% of the knob rotation is intended for a high resolution setting in the millisecond range. Using the attack-slop switch, the attack curve can be logarithmic or exponential. In addition, a CV processor for scaling, inversion and voltage-controlled deviation of the envelope waveform is integrated. The output levels can reach up to 10V in any polarity, mirrored to the opposite polarity or cut off with the voltage controlled devater scaler.