This is a really weird synth. It houses 5 yamaha fm chips, has the sampled drum voices from the elka drumstar, runs really hot and has an instant 80s sound.
The elka Omb5 has a crazy power supply with a big fan and enormous heatsink, it gets really hot to the touch during normal operation. this lowers the lifetime of all the parts near the PSU, especially the capacitors and the LED displays.
Replacement knobs available soon...