Apogee Symphony IO Mk II SoundGrid Audio Interface

Apogee Symphony IO Mk II SoundGrid Audio Interface

The Apogee Symphony IO Mk II SoundGrid Audio Interface delivers studio-grade analog I/O and ultra-low latency networked audio performance via SoundGrid connectivity. With up to 32 channels of balanced analog input and output and stereo digital S/PDIF per analog card, this chassis is built for demanding broadcast, post production, and high-end music studios.

Featuring premium AD/DA conversion with THD+N of -115 dB on analog inputs and -119 dB on analog outputs, this unit supports sample rates up to 192 kHz and includes RJ45 Ethernet connectivity, BNC word clock I/O, and a 1/4-inch headphone output for monitoring. The front panel includes a color touchscreen display and large rotary control for direct hands-on management.

Built in a rugged 2U rackmount chassis made in the U.S., this interface is ideal for recording, mixing, immersive audio, and multi-room setups where signal integrity and flexibility are essential. Expandable with I/O cards, it delivers excellent scale and performance for professional users.

Key Features

• 32 Analog Channels: Balanced DB25 analog inputs and outputs
• SoundGrid Network: Ethernet interface for multi-unit and low latency setups
• Digital I/O Support: Stereo S/PDIF on each analog I/O card
• Premium Conversion Quality: THD+N approx -115 dB input, -119 dB output
• Front-Panel Controls: Touchscreen display and large control knob

Technical Specifications

• Analog Inputs & Outputs: 32 channels via DB25 connectors
• Digital Formats: Stereo S/PDIF on each analog card
• Sampling Rates: Up to 192 kHz
• THD+N Analog Input: -115 dB @ +22 dBu
• THD+N Analog Output: -119 dB @ +21 dBu

What’s in the Box

• 1x Apogee Symphony IO Mk II SoundGrid Chassis with 32×32 Analog I/O
• 1x Power Cable
• Limited Warranty