Universal Audio APOLLO X4 GEN 2 ESSENTIALS+ Thunderbolt Audio InterfaceCreate with the world's most powerful desktop audio interface. Record and mix larger sessions and hear every detail with the next generation of UA's Apollo x4 interfaces, featuring highest resolution audio conversion, four Unison mic preamps, and QUAD Core DSP processing letting you record in realtime through UAD plug ins from Neve, Manley, Avalon, SSL, and hundreds more. Trusted by top artists and producers the world over, Apollo x4 levels up your