*Please note  -- This pre-owned item may show signs of use. Please refer to the photos for details of the product.  18 in/14 out Interface w/ 4 Unison Mic Preamps Apollo 8 is an elegant update to one of the world's most popular professional audio interfaces - delivering enhanced sound with the tone, feel and flow of analog recording. This 18 x 24 Thunderbolt 2 interface offers genuine UA analog design and next-generation A/D and D/A conversion, putting class-leading audio quality in a sleek new package. Built on UA's 50 year legacy of analog design excellence, Apollo 8 also features powerful UAD-2 QUAD or DUO processing and four onboard Unison mic preamps, delivering sonic performance that surpasses anything in its class. Next-generation Apollo A/D and D/A conversion for professional music production Onboard UAD-2 QUAD or DUO Core DSP allowing Realtime UAD Processing 4 Unison-enabled mic preamps for tracking through preamp emulations from Neve, API and Universal Audio 18 x 24 Thunderbolt 2 audio interface for Mac with powerful Console 2.0 software control Cascade up to 4 Apollo interfaces and 6 UAD devices total over Thunderbolt (Mac) Convenient front panel monitoring functions including Alt Speakers and assignable Dim or Mono Includes Realtime Analog Classics Plus" plug-in bundle World class UA analog design, superior components and premium build quality Audio Interface Sample rates up to 192 kHz at 24-bit word length 18 x 24 simultaneous input/output channels: Eight cha