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The Symphony I/O Mk II from Apogee Electronics is an advanced, flexible multi-channel audio interface featuring the newest flagship AD/DA conversion, modular I/O (up to 32 inputs and outputs), and an intuitive touchscreen display. The chassis provides two I/O Module slots for a variety of digital audio conversion options that form the interface side of the Symphony I/O Mk II. The front-panel touch screen offers convenient access to nearly every setting including sample rate, clock source, headphone & speaker output levels, meters for all I/O and section navigation, as well as input levels, digital I/O, and configuration settings.
The rear panel provides access to the two I/O Module slots that are capable of a combined thirty-two channels of input and output, while the two Thunderbolt connectors ensure compatibility with newer Mac computers. Also included are Wordclock I/O connectors & termination, an option card slot, and a quiet digitally-controlled fan to keep everything running cool.
The Symphony I/O Mk II features a single ultra-high-fidelity DAC and headphone amplifier with Apogee's Constant Current Drive technology, which was first introduced in the Apogee Groove. The headphone amplifier dynamically compensates for non-linearities of any connected headphones, providing massive power while maintaining extremely low distortion and linear frequency response.
The optional five I/O Modules allow the user to choose from standard configurations, or customize the following – channel count, analog to digital input, digital to analog output, microphone preamps (requires an analog card), and digital I/O.
Note:Note! This is the Symphony I/O chassis only.
Legendary AD/DA conversion
Up to 32 channels of modular analog I/O with optional 8 mic preamps
Ultra-low latency performance
Intuitive touchscreen display and front panel control
Option card slot for future platform flexibility
Dynamic Temperature Control
Designed in California, built in the U.S.A.
In the Box
Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)
THD+N: -117 dB @ 21 dBu (0.00014%)
Dynamic Range: 129 dB (A weighted)
Max Output Levels: -∞ to +24 dBu
Frequency Response at 44.1 kHz: DC to 20 kHz (±0.05 dB)
Output Impedance: 25 Ohms
Outputs are balanced through Apogee's proprietary Perfect Symmetry Circuitry (PSC)
Stereo Headphone Output (Front Panel): 1/4" / 6.35 mm
-110 dB @ 19 dBu into 600 Ohm (=80 mW)
-101 dB @ 14 dBu into 32 Ohm (=470 mW)
Dynamic Range: 121 dB (A weighted)
Output: Apogee's proprietary Constant Current Drive provides smooth frequency response with any headphones