The Model 37 ELF LFO has an identity problem. While specifically designed as an LFO, it's massive frequency range 1 cycle per 30 seconds to over 20Hkz makes it the perfect candidate for utility audio VCO applications. Incorporating a heavily-modified version of the TAU triangle core architecture, the M37 is capable of 1v/oct tracking across it's entire operating range when the external VC Attenuator is set to the full clockwise position.

A phase-accurate, one-shot driven hard Sync input will stop and restart the VCO dead in it's tracks with any input received. So unlike other VCOs, it doesn't require a squarewave input to operate.

Switch-selectable paired output ports morph between Triangle/Square or Positive Ramp/Pulse configurations. An LED indicates the energy level of the Triangle/Sawtooth output port in realtime.

The M37, although housed in a small, elfin package is a complex and accurate device and it's product page requires the level of detail a fully functional VCO deserves. Please check back in the next few days as audio examples, waveshape snap and application notes are added.

Bobby Voso demo's two Model 37's acting as audio VCOs and the intensity of their sync: