Apogee Symphony I/O Chassis - Base Unit - NO I/O Modules, from Apogee

Highlights:

• A/D THD+N: -113dB @ +20dBu (0.00024%) unweighted
• D/A THD+N: -117dB @ +20dBu (0.00014%) unweighted
• D/A Dynamic Range: 129dB A weighted
• Apogee’s proprietary Perfect Symmetry Circuitry (PSC)
• Software controlled AD/DA reference setting
• Variable gain input for keyboards
• Ultra low latency AD/DA conversion

Analog to Digital:

• THD+N: -113dB @ 20dBu (0.00024%)
• Dynamic range: 120dB A weighted
• Maximum input levels:

  • +4dB setting - 24dBu

  • -10dB setting - +6dBV

• Variable gain setting - 25dB of gain
• Frequency response at 44.1kHz 1-20,000 Hz (+/- 0.05dB)
• Input impedance: 10K

Digital to Analog:

• THD+N: -117dB @ 20dBu (0.00014%)
• Dynamic Range: 129dB A weighted
• Max output levels - ∞ to +24dBu
• Frequency response at 44.1 kHz: dc to 20kHz (+/- 0.05dB)
• Output impedance: 25 Ohm
• Outputs are balanced through Apogee's proprietary Perfect Symmetry Circuitry (PSC)

Headphones:

• THD+N: -105dB @19dBu
• Dynamic Range: 119db A weighted
• Output impedance: 30 Ohm

Power:

• 90-240VAC, 50-60Hz, 150W

Operating System:

• Mac OS only 10.5.8 and above

Package Contents:

• Symphony I/O Interface
• USB Cable
• Power Cable
• Rack Ears and Bolts
• Quick Start Guide

Symphony I/O Dimensions:

• Inches: 17.75" (19" with Rack Ears) x 11.5" x 3.5" (4" with feet installed)
  
• Centimeters: 45 (48.26 with Rack Ears) x 29.2 x 8.9 (10.2 with feet installed)

Packaging Dimensions:

Symphony I/O Chassis Box

• Inches: 22.875 x 17.75 x 9.25
• Centimeters: 58.1 x 45.1 x 23.5

I/O Module Box

• Inches: 13.75 x 12.25 x 3.25
• Centimeters: 34.9 x 31.1 x 8.3

• The culmination of 25 years of Apogee's design excellence and experience
• Next generation converter quality
• Refined and updated circuitry with fewer, more advanced components:
  • Fewer components means a shorter audio path and more recording clarity and transparency
  • Lower converter latency
  • More efficient power distribution
  • Enhanced C777 clocking performance
• "Sound Amazing" remixed and remastered
• Optional mic preamp module
• Front panel control of headphone and output levels, and mic preamp gain (mic preamps optional)

Symphony I/O builds upon the award-winning design approaches of Apogee’s X-Series* and Rosetta Series converters*, the Big Ben master clock and the Trak2 mic preamps. It also refines and updates these proven designs with fewer but more advanced components while optimizing their performance with efficient power distribution. These enhancements allow audio to travel through less circuitry, offering lower converter latency, more accurate clocking and even more transparency and clarity in your recordings.

Apogee's engineers do not merely rely on specs and data sheets when selecting converter components, they listen. Each component is auditioned and carefully selected to best reflect the characteristics of the Apogee sound. Symphony I/O’s audio path design is elegant and efficient, incorporating the most advanced opamps that offer better performance than multiple parts used in previous designs.

 This design improvement minimizes the audio path circuitry and maximizes sound quality. And in the tradition of the X-Series and Rosetta series, the entire audio path is DC coupled, resulting in ultra flat frequency response and extremely low phase error.