Apogee Electronics Symphony I/O Mk II 16x16 Special Edition Thunderbolt Audio Interface

SKU: AES216X16SE MFR: SYM2-16X16SE
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Key Features

  • Experience pristine audio quality with this Apogee Thunderbolt audio interface.
  • Achieve ultra-low latency for seamless recording and mixing sessions.
  • Expand your studio with 16x16 analog I/O, perfect for complex projects.
  • Capture every nuance with high-resolution 192kHz/24-bit digital audio.
  • Enjoy superior driver support for reliable performance on your Mac system.
  • Get legendary Apogee conversion at a competitive price point.
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Special Order?Estimated to Ship: 08/15/2025
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Apogee Electronics Symphony I/O MkII 16x16SE Specifications

Symphony I/O Mk II Chassis

Symphony I/O Mk II Chassis

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  • Analog to Digital

    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

    THD+N: -117 dB @ 21 dBu (0.00014%)
    Dynamic Range: 129 dB (A weighted)
    Max Output Levels: -Infinite 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

    Stereo Headphone Output (Front Panel): 1/4" (6.35mm)
    THD+N: -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

    Computer: Thunderbolt-equipped Mac
    Memory: 4 GB RAM minimum, 8 GB RAM recommended
    OS X 10.9.5 or greater
    Thunderbolt cable (sold separately)

  • Power

    90 to 240 VAC, 50/60 Hz, 150 W

  • Dimensions

    Without Rack Ears: 17.8 x 11.5 x 3.5" (450.9 x 292.1 x 88.9mm)
    With Rack Ears: 19.0 x 11.5 x 3.5" (482.6 x 292.1 x 88.9mm)

16x16 SE Analog I/O Module

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  • Form Factor

    Internal Card

  • Converter Type

    AD/DA Converter

  • Number of Channels

    16x A/D (at 192 kHz)
    16x D/A (at 192 kHz)

  • Display

    None

  • Maximum Sampling Rate

    192 kHz / 24-Bit

  • Number of Microphone Preamps

    None

  • Expansion Slots

    None

  • Analog Audio I/O

    2x DB-25 25-Pin Balanced Line Input
    2x DB-25 25-Pin Balanced Line Output

  • Phantom Power

    None

  • Digital Audio I/O

    2x RCA Coaxial S/PDIF In/Out

  • Host Connection / USB

    None

  • USB (Non-Host)

    None

  • Sync I/O

    None

  • Network I/O

    None

  • MIDI I/O

    None

  • Wireless Connectivity

    None

  • Frequency Response

    1 Hz to 20 kHz +/-0.05 dB (at 44.1 kHz)

  • Maximum Input Level

    +24 dBu

  • Maximum Output Level

    +24 dBu

  • Impedance

    A/D Converters: 10 Kilohm
    D/A Converters: 50 Ohm

  • Dynamic Range

    A/D Converters: 124 dBA
    D/A Converters: 128 dBA

  • THD+N

    A/D Converters: -116 dB / 0.00015% (at 23 dBu)
    D/A Converters: -119 dB / 0.00014% (at 21 dBu)

  • Sample Rates

    44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

  • Bit Depths

    24-Bit

  • OS Compatibility

    None

  • Included Software

    None

  • App Compatible

    No

  • Power Requirements

    PCIe

  • UPC Code

    805676302997

About Apogee Electronics Symphony I/O MkII 16x16SE

Before you delve into the world of professional audio recording, consider the Symphony I/O Mk II 16x16 Special Edition Thunderbolt Audio Interface. This device offers an intuitive, user-friendly interface with a front panel touchscreen, providing easy access to all essential input and output settings. You can effortlessly adjust your input selection, monitoring levels, mic pre gain, and calibrate your Symphony I/O Mk II to match the levels of other analog gear in your system.

The high-resolution TFT display provides critical visual feedback for recording and monitoring. Without even glancing at your computer, the Symphony I/O Mk II allows you to view metering for up to 64 channels of I/O, 32 IN x 32 OUT - including signal levels, polarity, muting, phantom power, and Soft Limit.

The Symphony I/O Mk II is designed with advanced temperature controls to ensure optimal performance and reliability. The touchscreen and control software provide easy access to these controls, complemented by an improved fan and chassis ventilation design for quiet, effective component cooling.

The Symphony Control software for macOS offers comprehensive access to all features and functions of the Symphony I/O Mk II Thunderbolt. This includes setting gain levels (for preamp modules only), managing routing, controlling output levels, setting calibration, setting up multiple mixers, and more.

The Symphony I/O Mk II Thunderbolt is equipped with ESS Saber32 DAC Technology, offering unparalleled dynamic range, ultra-low distortion, and unmatched audio clarity free from input jitter. It also features an audiophile-grade headphone monitoring with Constant Current Drive technology, providing massive power while maintaining extremely low distortion and linear frequency response.

The Symphony I/O Mk II Thunderbolt delivers the full potential of Thunderbolt 2 performance with the lowest latency, unmatched CPU efficiency, and two ports for connecting additional peripherals. Its custom driver includes a revolutionary Direct Memory Access (DMA) engine to more efficiently read and write data directly to Mac memory independent of the Mac CPU.

The Symphony I/O Mk II 16x16 Special Edition offers the highest quality AD/DA conversion of the Symphony series. It is designed for ultimate sonic performance for Dolby Atmos and other immersive audio applications. With a greater dynamic range and a lower total harmonic distortion, your listening experience will be transformed. This device is built for immersive audio, allowing you to work with immersive audio systems without needing an external monitor controller.

In a masterful feat of electrical engineering, the 16x16 SE I/O module runs about 20% more efficiently than its predecessor, meaning a cooler running interface, even with a fully loaded 32x32 chassis. Experience the difference with the Symphony I/O Mk II 16x16 Special Edition Thunderbolt Audio Interface.

Apogee Electronics Symphony I/O MkII 16x16SE Features

  • Best AD/DA conversion of any Thunderbolt audio interface
  • 16x16 SE channels of modular analog I/O with optional mic preamps
  • Best per-channel value of any interface in its category
  • Thunderbolt (Mac) connectivity
  • Ultra-low latency performance
  • Advanced Monitor Workflows featuring plug and play Atmos configuration
  • All new, highly customizable Symphony Control software provides easy access to all I/O parameters
  • Intuitive touchscreen display and front panel control
  • Designed in California, Built in the U.S.A

Warranty Information

This product has a limited warranty of 12 months for parts and 12 months for labor.

Product Documents

User Manual

Key Features

  • Experience pristine audio quality with this Apogee Thunderbolt audio interface.
  • Achieve ultra-low latency for seamless recording and mixing sessions.
  • Expand your studio with 16x16 analog I/O, perfect for complex projects.
  • Capture every nuance with high-resolution 192kHz/24-bit digital audio.
  • Enjoy superior driver support for reliable performance on your Mac system.
  • Get legendary Apogee conversion at a competitive price point.

What's in the box:

  • Apogee Electronics Symphony I/O Mk II 16x16 Special Edition Thunderbolt Audio Interface
  • Power Cable
  • Apogee Electronics 1 Year Limited Warranty