There are multiple artists who use the name Quadra: 1.) Japanese electronic musician Hiroshi Watanabe. Also released material under name Kaito. 2.) L.A based DJ Ido Liran, who has made 4 albums: “Digital Stimulant“, “Serotonia” , “One Nation Under Trance" and “Voice of Reason“. 3) A post-rock/space disco band from Braga, Portugal