The Edirol Super Quartet (HQ-QT1) is a classic 32-bit software synthesizer that has been discontinued

Roland now offers a subscription service called . It includes:

Even if you find a cracked copy, it will never receive bug fixes, macOS or Windows updates, or 64-bit compatibility. Many users report crashes on Windows 10/11 and modern Macs (Apple Silicon).

Includes Concert Grand, Upright, and Electric variants.

There is no legitimate, safe, legal free download of Edirol Super Quartet. Any website claiming otherwise is either distributing pirated software or malware — or both.

Producers are better served by exploring modern, legal alternatives like Roland Cloud or free options like Spitfire LABS, which offer better sound quality and stability on modern operating systems.