Apogee Symphony I/O MKII 8x8 MP Connect Series Thunderbolt Audio Interface

The Apogee Electronics Symphony I/O Mk II 8x8 MP Connect Series Thunderbolt Audio Interface features flagship A/D and D/A conversion, eight mic preamps, modular I/O, and an intuitive touchscreen display. The installed Connect 8x8 MP module also gives you eight analog outputs and digital I/O including AES/EBU, ADAT, and S/PDIF.

The front-panel touchscreen offers convenient access to nearly every setting such as sample rate, clock source, headphone & speaker output levels, meters for all I/O, and section navigation, as well as input levels, digital I/O, and configuration settings.

The rear panel provides access to the two I/O module slots—one occupied by the Connect 8x8 MP and the other open for future expansion, while two Thunderbolt connectors ensure compatibility with macOS systems and common peripherals. Also included are Wordclock I/O connectors for synchronizing external digital equipment and a quiet digitally-controlled fan to keep everything running cool.

The Symphony I/O Mk II features an ultrahigh-fidelity DAC and headphone amplifier with Apogee's Constant Current Drive technology, which dynamically compensates for nonlinearities of any connected headphones to provide massive power while maintaining extremely low distortion and linear frequency response.

Advanced Stepped Gain Architecture
Apogee's Advanced Stepped Gain Architecture introduces a mic preamp circuit that is dynamically optimized at different gain settings to provide superior bandwidth, ultralow noise, and nonexistent distortion across an expansive gain range of 0 to 72 dB. Digitally-controlled analog switches "shift the gears" of the circuit at each gain setting to ensure the best sound and performance.

Transparent Conversion
High-performance A/D-D/A conversion designed for extreme audio clarity and sonic transparency

• Eight balanced analog inputs and outputs at up to 192 kHz via DB25 connectors
• Eight microphone preamps with up to 72 dB of gain
• Eight AES/EBU inputs and outputs (192 kHz single-wide compatible) via DB25 connector
• TOSLINK optical inputs and outputs support ADAT, SMUX, and S/PDIF (8x8 ADAT at 44.1 or 48 kHz, 8x8 SMUX at 88.2 or 96 kHz, 2x2 S/PDIF at up to 96 kHz)
• Coaxial input and output for 2x2 S/PDIF at up to 192 kHz

• Ultralow-latency performance
• Stereo 1/4" headphone jack features Apogee's proprietary Constant Current Drive for smooth frequency response with any headphones
• Easy-to-use color touchscreen display
• Large front-panel control for quick adjustment of selected parameter
• Highly customizable Symphony Control software provides easy access to all I/O parameters
• Supports multiple I/O cards
• BNC word clock I/O for synchronizing external equipment
• Enhanced temperature controls are complemented by an improved fan and chassis ventilation design, which allows adequate component cooling to occur quietly
• Designed in California, built in the USA

• Up to 72 dB of gain in 1 dB increments
• Noiseless gain adjustment
• +26 dBu maximum input level
• Improved common mode noise rejection and EMI suppression for optimal performance
• Switchable impedance (2.4 or 10 kilohms) to support passive mic splitting in live sound applications
• Control all mic preamps from Symphony I/O’s front panel, the optional Apogee hardware remote control, or in Apogee control software
• Simplified and optimized signal path with fewer components and higher channel count
• Available in configurations of eight, 16, 24, or 32 flagship mic preamps per unit