Universal Audio Apollo Twin X QUAD Gen 2 Audio Interface with Studio+ and CoverUniversal Audio Apollo Twin X QUAD Gen 2 Thunderbolt 3 Audio Interface with Studio+ Bundle The Universal Audio Apollo Twin X QUAD Gen 2 with Studio+ Bundle is a desktop Thunderbolt 3 audio interface designed for musicians, producers, and songwriters. It offers professional grade recording, real time plug in processing, and precise monitoring. With QUAD Core DSP, two Unison preamps, and a suite of UAD plug ins, you can record, mix, and produce tracks