You need the real hardware synthesizer which the editor is made for. If PRO upgrade is available, hardware is not required. List for requirements:

• You need the real hardware synth, which the editor is made for.
• Version 3 requires 64-bit AAX, AudioUnit, VST2 or VST3 host for Mac & PC.
• 32/64-bit AudioUnit / VST host for Mac or PC.
• MIDI interface. A good one which supports SysEx messages. Don’t buy anything which is less than 50€.
• Direct MIDI in / out connection between your synth and the MIDI interface. No MIDI Thru connections or MIDI in only / MIDI out only connections.
• Audio cables from the synth to soundcard or mixer in order to hear the sound.
• At least FULL HD resolution.