In very good condition and works as intended! Currently residing in the famous Sound Factory studios where it has been used on various projects from producer Rich Costey who's best known for his work mixing and producing bands such as Foster The People, Muse, and Vampire Weekend.
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The Frostwave Resonator from Australia is in fact a "true clone" of the Korg MS-20’s classic VCF analog filter section. It consists of a high and low pass filter in series, with resonance and cutoff controls for each, plus a balance control and bypass switch.
It looks like one big fat guitar stomp box! It's got four knobs to adjust the Frequency Cutoff and Resonance for each filter, as well as an overall Volume knob and Wet/Dry Mix knob.
There are also six 1/4" jacks on the Resonator for audio and control. A mono input, mono output, and Control Voltage (CV) inputs for the low pass cutoff and resonance and high pass cutoff and resonance. These CV inputs let you control the resonator with other analog synths.