# Symphony I/O Release 4 Supported Features

### Features supported in this release (4.1)

- Symphony audio interface mode supports the following features:

  - Symphony 64 - connection of 1 Symphony I/O per port, maximum 2 Symphony I/Os connected to 1 Symphony 64 PCIe card.

  - Symphony Mobile - connection of 1 Symphony I/O

  - Complete Routing in Maestro 2

  - 2 low latency mixers

  - Loop Sync clock configuration

- Pro Tools HD audio interface mode supports the following features:

  - Connection of 1 Symphony I/O per Avid PCIe card, included Core, HD Process and HD Accel PCI, HD Accel Core and HD Accel PCIe cards; maximum 4 Symphony I/Os connected to 4 Pro Tools HD PCIe cards.

  - Connection of 1 Symphony I/O per port to an Avid Pro Tools HD Native PCIe card - maximum 2 Symphony I/Os connected to 1 HD Native PCIe card.

  - Loop Sync clock configuration

- USB audio interface mode supports the following features:

  - Maximum of 1 Symphony I/O, 16 channels of bi-directional audio at sample rates up to 96kHz

  - Complete Routing in Maestro 2

  - 2 low latency mixers

- Standalone audio interface mode supports the following features:

  - Connection of 4 Symphony I/Os to Maestro 2

  - Complete Routing in Maestro 2

  - 2 low latency mixers

- All audio interface modes: 1 or 2 of the following I/O Modules per Symphony I/O in any combination:

  - 8 Analog I/O + 8 Optical I/O

  - 8 Analog I/O + 8 AES I/O

  - 16 Analog IN + 16 Optical Out

  - 16 Analog OUT + 16 Optical In

- 8 Channel Mic Pre IO Module: 1 per Symphony I/O (a 8x8 or 16 In IO Module must be installed in the lower IO Module slot).

- Apogee Maestro 2 software

Compatibility with other Apogee Hardware and Software

The version of Apogee Maestro installed with Symphony I/O Release 4.1 is currently compatible with the following Apogee products:

- Duet FW

- Ensemble

- ONE

- Duet USB

### To be supported in future update releases:

- Compatibility with legacy Apogee interfaces equipped with X-Symphony or X-HD Option cards