Univox Mini-Korg Synthesizer

Univox Mini-Korg Synthesizer 700 For Sale. This Minikorg has been serviced by perfectionists. 

This unit has some very useful modifications that expand its capabilities. 

Adjustable Resonance
The stock minikorg just has a single switch for resonance boost, but this one's got 2 additional rotary pots added for variable resonance of the high pass and low pass filters - it really lets this minikorg scream! This mod alone is a huge improvement over a standard minikorg. 

Filter Input
There's also an audio input allowing one to process external sounds through its filters.

Adjustable Chorus Rate
There's a pot to adjust the rate of chorus 1.

Octave and Waveform Mixing
These mods give you the ability to mix waveforms and octave divisions, resulting in a fatter sound. The mods are a bit confusing and seem to interact with the octave and waveform switches, so things take a little getting used to. Our tech said the mods and wiring are strange and does not want to spend time reverse engineering them. He normally removes mods like this but we thought they were quite useful so decided to leave them.

The additional octave and waveform knobs are active at the very top of their range and are more like switches that are sometimes inactive, depending on the patch settings. Sometimes octave switch settings will cause a drop in volume if the appropriate knobs are not adjusted, and sometimes there will be a change in timbre of the selected waveforms if the knobs are not adjusted properly. Like I said, it's confusing. There are also settings where it seems the chorus waveform is just a heavily rhythmic pulse modulated sound whose rate changes with octave shifting. We can't be sure if this was intentional due to the mod or a cool defect - the only way to know without wasting a lot of time studying the schematics and tracing the added wires would be to remove the modifications. We can do this, but if we do, we're not going to redo them. So we'll leave it up to you - remove the mods and make sure the waveforms and octave switches and circuitry work like they would in a stock unit, or leave the mods the way they are with the possibility that something's not working quite right but is still really cool! Please let us know your preference if you'd like to buy this unit.

These mods give this minikorg more sonic possibilities than a stock unit and add value to this example. 

We paid our tech for 5 hours of skilled labor to service this unit. In addition to fixing any known problems, he did the following:

Cleaned jacks
Replaced all power supply electrolytic capacitors (he says someone previously replaced the other electrolytic capacitors)
Replaced fuse
Cleaned and lubed all pots
Calibrated VCO

Here are a few videos of this modified unit in action:

OMG Check out this filter! 
https://www.youtube.com/shorts/kQYJKjL2jO0

Some more sounds:
https://youtube.com/shorts/2cclC6FZEFI?si=DBKOkgbUC8ik3rl2