Dark Energy III is the successor of Dark Energy II. The main differences between II and III are an improved VCO (no warm-up period, additional triangle waveform, wider frequency range), resettable LFOs, improved ADSR and a lot of internal access points for DIYers. The favored filter of the Dark Energy II has been unchanged.
Dark Energy III is a monophonic stand-alone synthesizer with USB and Midi interface. The sound generation and all modulation sources are 100% analog, only the USB/Midi interface contains digital components. It is built into a rugged black metal case with wooden side plates. High quality potentiometers with metal shafts are used and each potentiometer is fixed to the case.
Lots of internal access points for DIY applications or modification of the socket functions (e.g. VCO outputs triangle, sawtooth, rectangle, hardsync, softsync, linear FM, VCF outputs L/H/B, ADSR output and A/D/S/R CV inputs, LFO outputs triangle and square)