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Apogee Symphony I/O Mk II 8x8 Open Box

8x8 Configuration, 8x8 Analog I/O + 8x8 AES/Optical I/O, Thunderbolt, Open Box Savings

  • Apogee Symphony I/O Mk II 2x6 Front
  • Apogee Symphony I/O Mk II 8x8 Rear


Price: $2,995.00

(You save $300.00)

Pay over time with , apply during checkout.
0% interest on orders $299 and up* Learn More

Stock Item, Usually Ships Same or Next Business Day

Stock Item: Ships from our shelf quickly in almost all cases when ordered before our ship cutoff times.

Direct Ship: Non-stock item, but normally ships quickly from the manufacturer or alternate warehouse.

Built To Order: Item is custom built per the options chosen and quickly shipped out upon completion.

Visit our Shipping Page for cutoff times for FREE (USA), USPS or FedEx.

Product Description

Open box savings with full original warranty!

This is the Thunderbolt configuration.


  • Configuration - 8x8
  • Connectivity - 8x8 Analog I/O + 8x8 AES/Optical I/O
  • Channel Count - 16 channels of I/O simultaneously
  • Interface Type - Thunderbolt, Pro Tools HD or Waves SoundGrid

Symphony I/O Mk II General Description

Symphony I/O Mk II is a multi-channel audio interface featuring Apogee’s newest flagship AD/DA conversion, modular 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.

The new Symphony I/O Mk II comes with direct connectivity to one of three different platforms – Thunderbolt™, Pro Tools® HD or Waves SoundGrid® network.

Apogee Symphony I/O Mk II Highlights

  • Best AD/DA conversion of any Thunderbolt™ audio interface
  • Up to 32 channels of modular analog I/O with optional 8 mic preamps
  • Best per-channel value of any interface in its category
  • Choice of Thunderbolt, Pro Tools® HD (Mac/PC) or Waves SoundGrid® connectivity
  • Ultra-low latency performance
  • Intuitive touchscreen display and front panel control
  • Designed in California, Built in the U.S.A.

Input and Output Flexibility

There is a Symphony I/O Mk II solution for everyone; the home studio, project studio, commercial recording studio and scoring stage. Choose from four base I/O configurations, 2×6, 8×8, 16×16, or 8×8 with 8 mic preamps and easily expand as your studio grows. With two module slots and the capacity for up to 32 inputs and outputs of A/D & D/A conversion per unit, Symphony I/O Mk II offers the best per-channel value of any interface in its category.

Legendary Sound Quality

Apogee engineers have made it their passion to improve every new flagship product by using the latest in electrical components and designing optimized circuitry that often exceeds the expectations of the component manufacturer. This is the Apogee Advantage. Symphony I/O Mk II is the culmination of this 30 year commitment and raises the bar on all Apogee products before it with even better audio clarity and sonic transparency. In fact, when equipped with either the new 8×8 or 16×16 Mk II I/O modules, Symphony I/O Mk II outperforms all other multi-channel audio interfaces available for Pro Tools HD or Thunderbolt based systems, making it the flagship audio interface for the entire professional audio industry and the obvious choice for countless GRAMMY winning artists, producers, songwriters and engineers.


  • 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
  • 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
  • Power:
    90-240VAC, 50-60Hz, 150W
  • Operating System:
    Thunderbolt: Mac OS only 10.9.5 and above
    HD: Any Mac or PC running Pro Tools HD 9 or greater

Please check Apogee's website for current info before purchase: Apogee Symphony I/O Mk II Info

Warranty Information

Our ONE WITH EVERYTHING ZEN WARRANTY extends the standard manufacturer warranty by one year, see our ZEN WARRANTY page for details.

Customer Reviews / Q&A Discussion