Thank you for your purchase of Symphony I/O, the latest flagship digital audio interface from Apogee Electronics!
More than the latest high-end product from Apogee, Symphony I/O is the completion of the Symphony System and the platform for Apogee development and technology for years to come. Built to last and designed to meet the demands of the most discerning musicians, producers and engineers, Symphony I/O sets a new standard in digital audio interface quality, flexibility and ease of use.
Next-generation A/D and D/A conversion quality
Audio interface mode (AIM) selection for simple and direct connection to all popular audio workstations and formats
Flexible and scalable I/O architecture to fit the needs of any studio
Total software control with the new Apogee Maestro control software
Unprecedented value
The audio interface mode (AIM) setting transforms the most fundamental characteristics of the Symphony I/O system to best match the host device to which Symphony I/O is connected. Rather than create a single hardware and software user interface that must adapt to all connection scenarios, the audio interface mode customizes the user interface to your specific scenario, thus simplifying operation. If you change the way you connect your setup, select the appropriate AIM from the front panel. When switching between AIMs as your workflow demands, the settings of each mode are recalled automatically!
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Symphony - Connect to Symphony 64 PCIe and Symphony Mobile Express/34 cards. |
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Pro Tools HD - Connect to Pro Tools HD and HD Native PCIe cards. Symphony I/O may be controlled from a Mac via USB, though the Mac connection isnʼt required for audio operation. |
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USB Audio - Use Symphony I/O as a USB audio interface with an Apple Mac computer. |
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Standalone - Connect Symphony I/O to recording devices equipped with ADAT, S/PDIF or AES inputs and outputs. Symphony I/O may be controlled from a Mac via USB, though the Mac connection isnʼt required for audio operation. |
See Audio Interface Mode for details.
Several I/O Modules are available, allowing the customization of Symphony I/Oʼs inputs and outputs to your particular requirements.
8 channels of Analog and 8 channels of AES I/O simultaneously
8 analog inputs and outputs
8 AES inputs and outputs
Stereo S/PDIF Coax input and output.

8 channels of Analog I/O and up to 8 channels of Optical I/O simultaneously
8 analog inputs and outputs
8 channels of ADAT/SMUX inputs and outputs or a stereo S/PDIF optical input and output
Stereo S/PDIF coax input and output.

16 channels of Analog INPUT and up to 16 channels of Digital OUTPUT simultaneously
16 analog inputs
16 channels of ADAT/SMUX outputs or 2 stereo S/PDIF optical outputs
Stereo S/PDIF coax input and output

16 channels of Analog OUTPUT and up to 16 channels of Digital INPUT simultaneously
16 analog outputs
16 channels of ADAT/SMUX inputs or a 2 stereo S/PDIF optical inputs
Stereo S/PDIF coax input and output

8 Mic preamps with 4 instrument inputs and 8 insert points
8 Mic Pre inputs, with 85 dB of gain, 48v phantom power
4 Instrument inputs
8 assignable analog insert sends and returns

Symphony I/Oʼs operating parameters may be set from a variety of hardware and software controls, listed below. Though several options are offered, you may choose the hardware and software controls that best suit your individual preferences.
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Symphony I/O Front Panel |
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Apogee Maestro Software |
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Apple OS X Control Panels |
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Apple Mac Keyboard |