Features
* Switchable 4 or 8 stage phase shifter.
* Variable feedback ranges from mild swooshing to raucous mind bending.
* Two external control voltage inputs.
* Pseudo stereo output when 4 stage and 8 stage outputs are used.
* Transconductance amp based phase shift cells.
* On-Board LFO produces Triangle and Ramp waves.
* Phase angle is modulated in a logarithmic fashion.
* 8 Stages of phase shift result in some sweet barber pole effect.
Quirks
* With high feedback settings you get a bit of oscillation, depending on osc. rate.
* With ramp wave setting you get some control voltage feedthrough (and the above).
* Not a noise generator but not a piece of L.A. studio equipment.
* Makes a pop when switching between 4 and 8 stages.
* Board requires a simple kludge.
Title link takes you to more info and samples.
Title link takes you to a photo gallery of the Zebranalogic Oscillator ZA-1. You can find a sample here. 
