Dr. Dre's perfectionism has been one of the main reasons behind Detox's legendary delay, but his high standards haven't stopped him from lending his ear to projects outside the studio. Dre partnered with music mogul Jimmy Iovine last year to introduce Beats by Dre headphones, in partnership with Monster Cable. Now, the West Coast sound architect is taking his zeal for production to personal computers. The HP Envy 15 Beats limited-edition laptop is set to arrive October 22 and will feature the same technology applied to Beats by Dre headphones. The black notebook computer — retailing at $2,299 — will come bundled with mixing software and a pair of Beats by Dre headphones. Fellow producers Timbaland, Polow Da Don, Pharrell Williams and Will.I.Am also helped fine-tune the machine's sound.