Apogee Symphony I/O Mk II 24 x24

Symphony I/O Mk II 24 x24 - Thunderbolt
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Apogee Electronics
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Multi-channel audio interface for Dante™ featuring Pro Tools | HD™ connectivity

Symphony I/O Mk II is a multi-channel audio interface featuring Apogee’s flagship AD/DA conversion, modular, configurable I/O (up to 32 inputs and outputs), intuitive touchscreen display and optional world-class microphone preamps. Designed to deliver professional sound quality for audio recording, mixing and mastering, Symphony I/O Mk II is the ultimate music production centerpiece for any modern studio. And now, with the Symphony I/O Mk II Dante option card and a simple ethernet cable, Symphony I/O Mk II can be easily connected and shared across post production, broadcast, live sound or recording studio networks, unleashing legendary sound quality on the world’s most popular audio-over-IP solution. The Symphony I/O Mk II Dante option card also includes Pro Tools connectivity for integration of Pro Tools | HD systems into a Dante network environment. No other Dante-enabled audio interface offers this level of quality, flexibility and modularity.


Ultimate Sound Quality – Features Apogee’s Flagship AD/DA conversion and optional mic preamps I/O Flexibility – Up to 32 channels of analog inputs and outputs per unit with optional 8 mic preamp module


Pro Tools HD Peripheral Port – Up to 32 bidirectional channels up to 192kHz. Route Symphony I/O module inputs or Dante Rx to Pro Tools inputs by blocks of 8 channels. Pro Tools HD outputs are routed to Dante Tx and I/O module outputs


Interoperable networking technology – Works seamlessly with any other Dante-powered device


Up to 32 bidirectional channels at 96kHz – 16 bi-directional channels at 192kHz


The Symphony I/O Mk II Dante option card uses Audinate’s Brooklyn II module which features plug-and-play media networking for up to 32 bidirectional channels at 96kHz and 16 bidirectional channels up to 192k. The system can be configured with a number of custom options ranging from 8-32 analog I/O channels. Symphony I/O MK II Dante allows up to 32 channels with ProTools and redundant Dante connectivity to be fitted into a single two space rack device providing the smallest footprint available with this feature set.


Best AD/DA conversion of any Thunderbolt audio interface

Up to 32 channels of modular analog I/O with optional 8 micpreamps

Best per-channel value of any interface in its category

Choice of Thunderbolt, Pro Tools HD (Mac/PC) or WavesSoundGrid connectivity

Ultra-low latency performance

Intuitive touchscreen display and front panel control

Designed in California, Built in the U.S.A.

Analog to Digital:

THD+N: -115dB @ 22dBu (0.00020%) unweighted

Dynamic range: 122dB A weighted

Maximum input levels:

+4dB setting: +24dBu

-10dB setting: +6dBV

Frequency response at 44.1kHz: 1-20,000 Hz (+/- 0.05dB)

Input impedance: 10K

Digital to Analog:

THD+N: -119dB @ 21dBu (0.00014%) unweighted

Dynamic Range: 126dB A weighted

Max output levels to +24dBu

Frequency response at 44.1 kHz: dc to 20kHz (+/- 0.05dB)

Output impedance: 50 Ohm

Outputs are balanced through Apogees proprietary PerfectSymmetry Circuitry (PSC)

Headphone Output:

1 stereo 1/4 headphone output on front panel


-110dB @19dBu into 600 Ohm (=80mW)

-101dB @14dBu into 32 Ohm (=470mW)

Dynamic Range: 121db A weighted

Output: Apogees proprietary Constant Current Driveprovides smooth frequency response with any headphones


90-240VAC, 50-60Hz, 150W

Operating System:

Thunderbolt: Mac OS only 10.10 and above

HD: Any Mac or PC running Pro Tools HD 9 or greater

Software Compatibility:

Thunderbolt: Logic Pro or any Core Audio compatibleapplication on Mac OS X

HD: Pro Tools HD 9 or greater

Package Contents:

Symphony I/O Mk II Interface

Power Cable

Quick Start Guide

Warranty Booklet

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

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

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