User Manual

Technical Details
General Details
Technical Specifications
Analog to Digital
THD + N: -114dB @22dBu (0.00020%)
Dynamic Range: 122dB (A-weighted)
Max Input Level: (+4dBu ref): +24dBu
Max Input Level: (-10dBV ref): +6dBv
Frequency Response @ 44.1kHz sample rate: 10 - 20kHz (+/- 0.05dB)
Input Impedance: 10K
Digital to Analog
THD + N: -117dB
Dyn Range: 129dB (A-weighted)
Max Output Levels: ∞ to +24dBu
Frequency Response @ 44.1kHz sample rate: DC to 20kHz (+/- 0.05dB)
Output Impedance: 25 Ohm
Outputs are balanced through Apogee’s proprietary Perfect Symmetry Circuitry
(PSC)
Headphone Output
1 stereo 1/4” headphone output on front panel
THD + N:
-110dB @19dBu into 600 Ohm (=80mW)
-101dB @14dBu into 32 Ohm (=470mW)
Dyn Range: 121dB (A-weighted)
Output: Apogee’s proprietary Constant Current Drive™ provides smooth
frequency response with any headphones
Connections
2 Thunderbolt 2 ports
Max Audio Resolution
24-bit/192 kHz
General
Symphony I/O Mk II
Dimensions
Inches: 17.75 (19 with Rack Ears) x 11.5 x 3.5
Centimeters: 45 (48.26 with Rack Ears) x 29.2 x 8.9
Symphony I/O Chassis
Packaging Box
Inches: 22.875 x 17.75 x 9.25
Centimeters: 58.1 x 45.1 x 23.5
I/O Module Packaging Box
Inches: `3.75 x 12.25 x 3.25
Centimeters: 34.9 x 31.1 x 8.3
Power
AC IN 90-240VSV, 50-60 Hz, 150W MAX
SYMPHONY I/O MK II - USER’S GUIDE Page 46