The A-142-6 from Doepfer is a simple attack/decay envelope in 1U Intellijel format that can also be used as an LFO. Switching between envelope and LFO is done with the loop switch. In the OFF position, the module works as an envelope and in the ON position as an LFO. If the module receives a trigger signal in LFO mode, the envelope and LFO functions are superimposed. The speed and waveform of the LFO can be adjusted smoothly and variably with attack and decay.