I am selling my gently and barely used apogee quartet.  It will include everything that came in and with the original box.  please message me if you have questions. Apogee Quartet is the ultimate desktop audio interface and studio control center for professional recording on Mac and iPad. Made for the musician, producer and engineer that wants the ultimate sound quality and studio control in a compact desktop form factor, Quartet features legendary Apogee AD/DA conversion, four world-class microphone preamps, USB MIDI I/O, ESS Sabre32 DAC technology and monitor controls.With Quartets 4 Combo inputs you can connect microphones, guitars, keyboards or line level devices such as external mic preamps or a mixing board. Expand your system with eight additional inputs via Quartets optical (ADAT/SMUX) digital IN. Quartet also includes eight analog outputs six 1/4 balanced outputs for connection to speakers or outboard equipment and a separate, independently controlled 1/4 stereo headphone output. You can control up to three pairs of speakers or set Quartet up for 5.1 surround monitoring.Soft Limit For Protection From Digital Overs
An Apogee technology first introduced in 1992 on Apogees AD-500 converter, Soft Limit can be heard on countless platinum selling records around the world. Once a technology exclusively reserved for Apogees most advanced audio converters, Soft Limit is included in Quartet and can be enabled in Apogee Maestro software.This superior analog design prevents the digital clipping that causes distortion by instantaneously rounding off transient peaks before they hit the analog-to-digital converter. Soft Limit allows several more decibels of apparent level to be recorded while subtly providing an analog-like warmth to the sound.A Difference You Will Hear
From the mic preamps to the AD/DA converters and the clocking, Quartet is best-in-class and cutting-edge Apogee technology. With components carefully selected in critical listening tests and a highly efficient circuit design, Quartet was built by Apogee engineers to make a difference you can hear.Pristine, Next Generation AD/DA Converters
Quartets AD/DA converters are designed to deliver the purest recordings and best listening experience possible. Quartets efficient circuitry and state-of-the-art components provide a simplified signal path resulting in incredibly transparent recordings.Smooth, Detailed World-Class Mic Preamps
Much like the AD/DA converters, Quartets mic preamps feature the latest components and offer seamless click-free transitions as the gain increases and decreases throughout the incredible range of 0-75dB. This unprecedented feature allows you to dial in the perfect level, either with the controller knob or from within software, while delivering ultra-low noise and smooth, crisp detail. Quartets mic pres are suitable for all dynamic, condenser or ribbon microphones, allowing you to capture any sound without compromise.Inputs & OutputsAnalog Inputs
Quartet is equipped with 4 combination input connectors (XLR and 1/4) for connecting microphones, guitars and keyboards or your favorite external mic preamps, compressors and EQs.Digital Input
Quartet also includes 8 channels of digital input via 2 optical connections (ADAT/SMUX) for connecting an additional analog-to-digital converter such as Apogees Ensemble.Analog Outputs
Quartets 6 balanced 1/4 TRS outputs offer an impressive range of possibilities. Listen and compare stereo mixes on up to three sets of speakers.Word Clock
Quartet provides Word Clock OUT for synching an external A/D converter to Apogees superior clocking technology.MIDI
Quartet provides a single USB MIDI connection for your CoreMIDI compatible keyboard, synth, or DJ controller.Exclusive Deals on Waves Plug-ins
When you purchase a qualified Apogee product you can save hundreds even thousands on Waves world class Plug­In Bundles or Individual Plug­Ins... you choose and Apogee and Waves provide the savings! Dont forget, discounts can be applied to current Waves Special Deals.Two Ways to Save BigWaves Plug­In Bundles 35% off
Buy a qualified Apogee Product, register and receive a Waves­Discount­code redeemable for a 35% discount* on any Waves Plug­In Bundle you choose including, Special Bundle Deals and offers from Waves. or...Waves Individual Plug­In 25% off
Buy a qualified Apogee Product, register and receive a Waves­Discount­code, redeemable for a 25% discount* on any Waves Plug­In including, Special Plug­In Deals and offers from Waves. 
and...$100 Voucher
You will also receive a Waves­Voucher­code. Voucher may be redeemed for up to 50% toward any bundle or upgrade, or up to 25% toward any plugin off the price at the time of redemption*.

*Conditions and restrictions apply. See Apogee website for details. The Waves­code and $100 Voucher, cannot be combined in the same transaction.Audio Quality 
Max bit depth: 24-bit
Max sampling rate: 192kHz
Inputs 
Total inputs: 12
Analog inputs: 4
Digital inputs: 8
Mic preamps: 4
XLR/TRS combo jacks: 4
XLR only jacks: 0
1/4 only jacks: 0
S/PDIF in: 0
ADAT/optical in: 8
RCA in: No
AES/EBU DSUB: No
MADI: No
Outputs 
Total outputs: 6
Analog outputs: 6
Digital outputs: 0
XLR out: 0
1/4 out: 6
S/PDIF out: 0
ADAT/optical out: 0
RCA out: No
AES / EBU DSUB: No
MADI: No
Other Connectivity 
Connections: USB
MIDI I/O: Yes
Headphone output(s): 1
Word-clock I/O: Yes
Onboard Features 
Computer platform: Mac, iOS
Phantom power: Yes
Direct monitoring: Yes
Onboard DSP: Info not available
Metering: OLED display
Display: Yes
Latency control: Yes
Monitor control: Yes
Headphone control: Yes
Other 
Width: Info not available
Height: Info not available
Depth: Info not available
Weight: Info not available
Rack-mountable: No
Included software: No