Apogee Symphony I/O MKII Pro Tools HD Chassis (No Module Included) 233674 805676301785

$ 2,495.00

Apogee Symphony I/O MKII Pro Tools HD Chassis (No Module Included) 233674 805676301785

$ 2,495.00
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  • SKU: ASYM2PTHD233674
  • Brand: Apogee
  • Type: Audio Interfaces
  • Availability: In Stock
Key Features:
  • Mini-DigiLink Connectivity
  • Compatible with Pro Tools HD Systems
  • Ultra-Low Latency
  • Sample-Accurate Delay Compensation
  • Stereo 1/4" Headphone Jack
  • Loop Sync I/O
  • Color Touchscreen Display
  • Large Front-Panel Control
  • Supports Multiple I/O Cards
  • Made in the USA

The Apogee Electronics Symphony I/O Mk II Pro Tools Chassis is an audio interface chassis designed to provide direct connectivity to Pro Tools HD systems for recording and mixing engineers in broadcast, post-production, studio, and live stage applications. It features a Mini-DigiLink port in the pre-installed HD option card, BNC loop sync I/O, and BNC word clock I/O. A stereo 1/4" headphone jack enables quick and effective monitoring with a variety of headphone impedances.

Emulating an Avid HD I/O interface, it ensures seamless integration and sample-accurate delay compensation while delivering ultra-low latency for proper timing in signal conversion. Configure and control the chassis via the color touchscreen display and large rotary control on the front panel. Install multiple I/O cards (available separately) for up to thirty-two channels of analog inputs and outputs.

The Symphony I/O MkII is made in the USA and ships with a power cable.

  • Pre-installed HD option card allows Mini-DigiLink connectivity to your Pro Tools HDX, HD Native, or Core/Accel system
  • Emulates Avid HD I/O
  • Ultra-low latency performance
  • Sample-accurate delay compensation
  • Stereo 1/4" headphone jack features Apogee's proprietary Constant Current Drive for smooth frequency response with any headphones
  • Color touchscreen display
  • Large front panel control for quick adjustment of selected parameter
  • Supports multiple I/O cards for up to 32 channels of analog inputs and outputs
  • BNC loop sync I/O for synchronizing multiple Pro Tools HD audio interfaces
  • BNC word clock I/O for synchronizing external equipment


  • Form Factor: Rackmount
  • Display: Touchscreen
  • Channels of I/O: None
  • Maximum Sampling Rate: 192 kHz / 24-Bit
  • Number of Microphone Preamps: None
  • Built-In Microphone: None
  • Expansion Slots: None
  • Pad: None
  • High-Pass Filter: None
  • Solo/Mute: None
  • Analog Audio I/O: 1 x 1/4" TRS Headphone Output
  • Phantom Power: None
  • Digital Audio I/O: None
  • Host Connection / USB: 1 x DigiLink Mini, 1 x USB-B
  • Host Connection Protocol: Avid Proprietary
  • USB (Non-Host): None
  • Sync I/O: 1 x BNC Loop Sync Input, 1 x BNC Loop Sync Output
  • 1 x BNC Word Clock Input, 1 x BNC Word Clock Output
  • Network I/O: None
  • MIDI I/O: None
  • Wireless Connectivity: None
  • Maximum Input Level A/D Converters:+24 dBu (+4 dBu), +6 dBu (-10 dBV)
  • Impedance D/A Converters: 50 Ohms THD+N -110 dB (+19 dBu Input, 600-Ohm Load) -101 dB (+14 dBu Input, 32-Ohm Load)
  • Sample Rates: 192 kHz
  • Sample Rate Conversion: None
  • Bit Depths: 24-Bit
  • Sync Sources: None
  • Memory Card Slot: None
  • OS Compatibility: macOS, Windows
  • Included Software: None
  • Compatible Software (Not Included): Any Core Audio (Mac) Compliant Software. Pro Tools HD 9+
  • Included Plug-Ins: None
  • Supported Drivers/API & Plug-Ins: macOS Class-Compliant (No Driver Needed)
  • Mobile Device Compatibility: None

In the Box

  • Apogee Electronics Symphony I/O MkII Pro Tools HD Chassis (No I/O Modules)
  • Power Cable
  • Limited 1-Year Warranty
MPN: 233674 UPC: 805676301785
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