Symphony’s I/O modules are designed to future-proof your investment in flagship Apogee sound quality. If you own an original Symphony I/O, the Symphony I/O Mk II chassis can increase the longevity of your system by offering backwards compatibility with first generation 2×6, 8×8, 16×16 and 8 channel mic preamp I/O modules.

Thunderbolt Option Card
Symphony I/O Mk II Thunderbolt is the most powerful multi-channel audio interface for Thunderbolt-based Mac workstations. Designed for the home or professional studio running Logic Pro X or any other native based DAW, this system offers your choice of 4 different base I/O configurations with the option to expand up to 32×32 simultaneous channels per unit while still maintaining incredibly low latency.

Symphony I/O Mk II Thunderbolt relies on Apogee’s proprietary Thunderbolt driver, written from the ground up to offer unmatched performance and efficiency. When using Logic Pro X, latency has been reduced to an astounding 1.35 ms round-trip, allowing you to monitor through your DAW, plug-ins included, simplifying your workflow and leveraging the power of your Mac. Even when your session’s DSP demands require a higher buffer setting, Symphony I/O’s ultra-low latency means no longer having to choose between power and speed.

Symphony I/O Mk II Thunderbolt’s custom driver includes a revolutionary Direct Memory Access (DMA) engine to more efficiently read and write data directly to Mac memory independent of the Mac CPU. The DMA engine, running on Symphony I/O Mk II Thunderbolt’s hardware logic chip, increases the driver’s efficiency and provides the highest resolution signal possible to the DAC stage. This implementation allows the driver to crunch an enormous amount of data at an amazing speed, while making a very light demand on your Mac CPU. You benefit with lower latency, more plug-in power, and a transparent and encompassing listening experience.