Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)

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Important Notice: This item is non-cancelable and non-returnable
Special Order
Expected availability: 7-14 business days 
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Not eligible for Free Expedited Shipping

Product Highlights

  • 2 Input/Output Module Slots
  • Up to 16 Channels I/O per Module
  • Thunderbolt Connectivity
  • Front-Panel Touchscreen w/ TFT Display
  • Multi-Function Control Knob
  • Headphone Output
  • Dynamic Temperature-Controlled Fan
  • Compatible with any Core Audio Software
  • Apogee Maestro Software Available
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Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $1,000.00 Giveaway (the "Giveaway" or "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

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  • 1Description
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.
UPC: 805676301525
In the Box
Apogee Electronics Symphony I/O Mk II Chassis (Thunderbolt)
  • AC Power Cable
  • Rack Ears and Bolts
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Analog to Digital
    ADC THD+N: -114 dB @ 22 dBu (0.00020%)
    Dynamic Range: 122 dB (A weighted)
    Maximum Input Levels:
    +4 dB Setting: +24 dBu
    -10dB Setting: +6 dBV
    Frequency Response at 44.1 kHz: 1 Hz to 20 kHz (±0.05 dB)
    Input impedance: 10 kOhms
    Digital to Analog
    DAC 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)
    Headphone Output
    Headphone 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
    System Requirements
    System Requirements Computer: Thunderbolt-equipped Mac
    Memory: 4 GB RAM minimum, 8 GB RAM recommended
    OS X 10.9.5 or greater
    Thunderbolt cable (sold separately)
    General Specifications
    Power 90 to 240 VAC, 50/60 Hz, 150 W
    Dimensions (W x D x H) Without Rack Ears: 17.8 x 11.5 x 3.5" / 450.9 x 292.1 x 88.9 mm
    With Rack Ears: 19.0 x 11.5 x 3.5" / 482.6 x 292.1 x 88.9 mm
    Weight Not specified by manufacturer
    Packaging Info
    Package Weight 18.4 lb
    Box Dimensions (LxWxH) 22.8 x 17.9 x 9.9"

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