This is a spectacular interface.  Monitor control, DSP, Mixer, Preamps, Headphone Amps, Interface, all built in one stellar box.  Barely used and in great condition.  This is the original “FireWire” Apollo but includes the Thunderbolt 2 option card installed.  This unit actually provides quite a bit more flexibility than the new units as it includes BOTH FireWire AND Thunderbolt 2 connections as well as dedicated monitor outs, and separate Line/Mic inputs which allows you to keep more gear connected and choose between inputs and outputs easily within the software.  No plugins included.  Transfer to your UAD account will be completed during shipment so you can start rocking right out of the box.  Analog classics bundle will be included by UA.  Ships in original box with all original paperwork and cables and new FW 800 cable.  Full description below.  Ships fast Fedex.  Make an offer!   Universal Audio Apollo Quad The Universal Audio Quad audio interface reinvents recording by delivering legendary analog studio sound, feel, and flow to music creators everywhere. This 18x24 Thunderbolt audio interface combines 24/192 kHz audio conversion with onboard Realtime UAD Quad Processing. Plus it introduces Unison(TM) technology, a breakthrough in classic mic preamp emulation. Record your music in real time (at near-zero latency) through the full range of UAD plug-ins -- from Neve, Studer, Manley, Lexicon, API and more* -- putting racks of vintage EQs, compressors, mic preamps, tape machines, reverbs, and guitar amps at your fingertips. A Universal Audio breakthrough, Apollo’s Unison technology gives you the tone of the world's most sought-after tube and solid state mic preamps -- including their all-important impedance, gain stage "sweet spots," and component-level circuit behaviors. Based on unprecedented hardware-software integration between Apollo's mic preamps and its onboard UAD plug-in processing, Unison lets you record through stunning emulations like the bundled UA 610-B Tube Preamp plug-in, with more emulations coming soon.**  Apollo’s smart feature set includes four class-leading mic/line preamps, eight analog line outputs, two digitally controlled analog monitor outputs for full resolution at all listening levels, and up to ten additional channels of digital input via Optical and SPDIF connections. Onboard UAD Quad Processing lets you use UAD plug-ins both during realtime tracking and for mixing within Pro Tools, Cubase, Logic, Ableton Live and more. With its rugged aluminum construction, and front panel headphone and instrument connections, Apollo has all the right tools, all in the right place. Features: - 18x24 Thunderbolt audio interface with world-class 24-bit/192 kHz audio conversion - Realtime UAD Processing for tracking through vintage Compressors, EQs, Tape Machines, Mic Preamps, and Guitar Amp plug-ins with near-zero (sub-2ms) latency* - FireWire 800 and Thunderbolt 2 option card included for blazing-fast PCIe speed and rock-solid performance on modern Macs - Unison(TM) technology offers stunning models of classic tube and transformer-based mic preamps** - 4 premium mic/line preamps; 8 line outputs; 2 front-panel Hi-Z instrument inputs and 2 headphone outputs - 2 digitally controlled analog monitor outputs for full resolution at all listening levels - Up to 10 channels of additional digital input via Optical and SPDIF connections - Uncompromising analog design, superior components, and premium build quality - Includes "Realtime Analog Classics" UAD plug-in bundle, featuring Legacy editions of the LA-2A Classic Audio Leveler, 1176LN Limiting Amplifier, and Pultec EQP-1A Program Equalizer, plus Softube Amp Room Essentials, 610-B Tube Preamp, and more - Runs UAD Powered Plug-Ins via Audio Units, VST, RTAS & AAX 64 in all major DAWs