Dr. Dre in Santa Monica, California. An exclusive laptop, known as the HP ENVY 15 Beats limited edition, was released for sale October 22. In May 2014, technology giant Apple purchased the Beats brand for $3 billion, Apple's most expensive purchase by far. The deal made Dr. Dre the "richest man in hip hop", surpassing Diddy. During May 2013, Dr. Dre and Jimmy Iovine donated a $70 million endowment to the University of Southern California to create the USC Jimmy Iovine and Andre Young Academy for Arts, Technology and the Business of Innovation. The goal of the Academy has been stated as
Dr. Dre can control it better." Other equipment he uses includes the E-mu SP-1200 drum machine and other keyboards from such manufacturers as Korg, Rhodes, Wurlitzer, Moog, and Roland. Dr. Dre also stresses the importance of equalizing drums properly, telling Scratch magazine in 2004 that he "used the same drum sounds on a couple of different songs on one album before but you'd never be able to tell the difference because of the EQ." Dr. Dre also uses the digital audio workstation Pro Tools and uses the software to combine hardware drum machines and vintage analog keyboards and synthesizers. After founding Aftermath