One comment for future designs - the Paraphonic LED is very hard for me to distinguish yellow and green. I have the panel set to lowest brightness because if i set it higher it hurts my eyes.
However, since I (and many other males) have a color weakness, telling the difference between red/orange/yellow/green LEDs can be difficult. I know it would void my warranty, but would it be a simple thing to replace that LED with a different one to better see the 2 colors?
On the plus side -- love the sound, actually really enjoy the built-in effects (usually they are crap and significant +++ to you for not putting in a reverb). You can get a lot of colors out of that oscillator and filter and the envelopes really can snap.
Bonus for me -- using the 12 dB filter (analog or digital) in all pass mode (all turned on) allows you to use the cutoff and resonance to bring out some very interesting sounds.
We are using RGB LEDs and the color can be changed by software. Maybe we create an alternative color scheme for you!
Jorg - it's a matter of the hue and saturation. All of your other LEDs are perfect - I can see at a glance exactly the colors. If you can maybe play around with adjusting the intensity of the green state to be dimmer, the difference between yellow and green may be easier to spot.
But - no matter the LED color, I'm really loving the power in this monosynth. I had a lot of fun yesterday taking the Noise output and patching it into the filter cutoff and then playing around with the different filter modes and amount of modulation. Definitely an excellent machine here.