The Synthrotek MST line aims to offer an all-analog monophonic synth voice. Their MST Voltage Controlled Low Frequency Oscillator is a compact module with a ton of useful features. The module features three waveform outputs that can be shaped manually or via CV. The module is particularly great for vibrato, tremolo, frequency modulation, and much more.
MST Voltage Controlled LFO Features
Voltage Control rate input with attenuator control