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Apogee Symphony I/O MKII Pro Tools HD 32x32 Analog I/O

Symphony I/O Mk II HD Multi-Channel Audio Interface for Pro Tools HD on Mac or PC
Part No: SYM2-A32X32-PTHD

Symphony I/O Mk II HD is designed for the Pro Tools HD user who needs a multi-channel audio interface with the best sound quality at an incredible cost per channel value. Whether using a Mac or PC based studio, Symphony I/O Mk II HD can connect directly to your Pro Tools HDX, Pro Tools HD Native or Pro Tools Core/Accel systems.

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£7,429.00 £6,190.83 ex VAT
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£7,429.00 £6,190.83 ex VAT

Product Description


Symphony I/O Mk II HD can be utilized alongside or in place of Avid or Digidesign interfaces for Pro Tools HD. In fact, each I/O module installed in Symphony I/O Mk II HD appears and functions in Pro Tools HD the same if it were a separate Avid HD I/O interface, so set up is easy and you can take advantage of important Pro Tools features such as sample-accurate delay compensation.

A single Symphony I/O Mk II HD unit can have up to 32 simultaneous analog I/O, so you can have more channels with less rack gear.  Need even more channels?  You can utilize multiple units simultaneously, with one Symphony I/O Mk II HD per every Pro Tools HD port in your system. Calibrating your I/O is easy with Symphony I/O Mk II HD’s front panel touchscreen.



The Apogee Symphony I/O Mk II is so fresh you’ll have to watch this space for reviews!


  • Best performance of any multi-channel Pro Tools HD interface
  • Best cost per channel value of any Pro Tools HD interface solution
  • Connects directly to any Pro Tools HD system (Mac or PC)
  • Emulates Avid HD I/O interface, including sample-accurate delay compensation
  • Connect multiple units in a single system (1 unit per HD port)
  • Easy I/O calibration with front panel touchscreen


Additional Information


Analog to Digital

  • THD+N: -114dB @ 22dBu (0.00020%)
  • 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: -117dB @ 21dBu (0.00014%)
  • Dynamic Range: 129dB A weighted
  • Max output levels – ∞ to +24dBu
  • Frequency response at 44.1 kHz: dc to 20kHz (+/- 0.05dB)
  • Output impedance: 25 Ohm
  • Outputs are balanced through Apogee’s proprietary Perfect Symmetry Circuitry (PSC)

Headphone Output

  • 1 stereo 1/4″ headphone output on front panel
  • THD+N:
      • -110dB @19dBu into 600 Ohm (=80mW)
      • -101dB @14dBu into 32 Ohm (=470mW)
  • Dynamic Range: 121db A weighted
  • Output: Apogee’s proprietary Constant Current Drive™ provides smooth frequency response with any headphones


  • 90-240VAC, 50-60Hz, 150W

Operating System

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


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.


  • Pro Tools HD Core card
  • Pro Tools Accel PCI card
  • Pro Tools HD Native PCI card
  • Pro Tools HD Native Thunderbolt
  • Pro Tools HDX PCI card


  • 44.1kHz – 192kHz
  • Sample accurate compatibility with Pro Tools Delay Compensation


  • Mac or PC


  • Front panel touchscreen

Compatible Software

  • Pro Tools HD 9 or greater



  • Analog IN: 32 balanced inputs on 4 DSUB 25-pin connectors
  • Coax IN: S/PDIF on 1 RCA connector


  • Analog OUT: 32 balanced outputs on 4 DSUB 25-pin connectors
  • Coax OUT: Supports SPDIF on 1 RCA connector

What's in the box

  • Symphony I/O Mk II Interface
  • Power Cable
  • Quick Start Guide
  • Warranty Booklet