A Special Edition of Universal Audios popular desktop 2x4 Apollo Solo USB Interface, with a Bundled UAD Plug-In Package Worth over $1,300.Apollo Solo USB Heritage Edition has all the benefits of the popular Apollo Solo USB, including class-leading UA audio conversion, two Unison mic preamps, and SOLO Core realtime UAD plug-in processing. And it goes a step further, with a software suite of 5 award-winning UAD plug-in titles, featuring Collections from Teletronix, Pultec, and UA.