Thunderbolt Card option for the Symphony I/O MKII (Requires Installation) The Apogee Symphony I/O Mk II Thunderbolt Option Card is an optional expansion card providing Thunderbolt connectivity to... View more
Multi-channel audio interface for macOS Systems Meet Symphony I/O Mk II. Symphony I/O Mk II is a multi-channel audio interface featuring Apogee's flagship AD/DA conversion, modular I/O (up to 32... View more
