Apogee Quartet is a professional USB audio interface designed to deliver the ultimate desktop recording experience to the iPad and Mac-based studio. Featuring 4 inputs and 8 outputs of Apogee’s industry-leading AD/DA conversion technology as well as 4 world-class mic preamps, Quartet bridges the gap between the 2-channel Apogee Duet and Apogee’s flagship interface, Symphony I/O.
Quartet for iPad and Mac features special circuitry designed to deliver professional performance for iPad use along with low latency USB 2.0 performance for Mac. Quartet's MIDI I/O connector lets you connect and power a Core MIDI compatible keyboard/controller while using Duet with your iPad or iOS device.
Legendary Sound Quality
Why Apogee Quartet is the best choice for your studio
Apogee is an award-winning industry leader in digital recording technology with over 25 years of experience. Preferred by recording pros around the world, Apogee products like Duet, Ensemble and Symphony I/O have been instrumental in creating countless GRAMMY® and OSCAR® winning recordings and have set the industry standard in professional recording for over two decades. Quartet is built solidly on this reputation.
Sound Quality - The Apogee Advantage, 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
Quartet’s AD/DA converters are designed to deliver the purest recordings and best listening experience possible. Quartet’s 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, Quartet’s 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. Quartet’s mic pres are suitable for all dynamic, condenser or ribbon microphones, allowing you to capture any sound without compromise.
Soft Limit for protection from digital overs
An Apogee technology first introduced in 1992 on Apogee’s AD-500 converter, Soft Limit can be heard on countless platinum selling records around the world. Once a technology exclusively reserved for Apogee’s 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.
- Charges iOS device. Quartet charges the iPhone, iPod Touch, or iPad when connected so your work is not interrupted
- 4 analog inputs with world-class mic preamps and selectable 48v phantom power for connecting microphones, instruments or line-level devices
- Works with iOS and Mac. Direct connection with Lightning or 30-pin iOS devices (iPhone, iPod touch, iPad) and USB connection to Mac
- Maestro app for iOS and Mac. Software control of hardware parameters including input selection and low latency monitoring
- iOS 7 & OS X Mavericks compatible. Works with OS X 10.9 Mavericks. Works with iOS 7 on iPad, iPhone, iPod touch
iOS device compatibility
In the box
4 Analog Inputs
3 assignable touchpads to control:
EIN: 128dB (un-weighted) @ 60dB, 150Ohm input
Max input level: +20dBu
Input impedance: 3KOhm
Max input level 14 dBu
Input impedance: >2MOhm
Max input level (+4dBu ref): +20dBu
Max input level (-10dBV ref): +6dBV
Input impedance: 5KOhm
Freq resp 20 Hz -20Khz: > +/-0.2dB (@44.1Khz)
Rel. THD + N: -106dB (@ 96Khz)
Dyn. Range: 114dB (A-weighted)
Max output level (+4dBu ref): +20dBu
Max output level (-10dBV ref): +6dBV
Line output impedance: 90 Ohm
Max output level headphones: 19dBu
HPH output impedance 30 Ohm.
Freq resp 20Hz -20 Khz: > +/- 0.05dB (@44.1Khz)
Rel. THD+N : -113dB (@96Khz)
Dyn Range: 123dB (A-weighted)