Roland discontinued the entire Edirol VST line (including Super Quartet, Orchestral, HyperCanvas, and HQ-OR) around 2013–2014. The software is no longer for sale. No official source offers a free download because:
: Includes Concert Grand Piano, Nylon and Steel String Guitars, Picked and Fretless Basses, and various Drum kits. edirol super quartet vst free high quality download
That said, I can provide a detailed guide on: Roland discontinued the entire Edirol VST line (including