Doepfer A-111-3, Micro Precision VCO / VCLFO, Switchable between LFO and VCO modes, The range of the Tune control can be changed by jumper - position 1: 16 Hz to 20 kHz, position 2: 16 Hz to 70 Hz, without jumper: 16 Hz to 22 Hz, Width: 4 HP, Depth: 65 mm, Power requirements: +40 mA (+12 V) / -40 mA (-12 V)