Are there any limitations when using Eleven Rack with Pro Tools HD?
Eleven Rack supports sample rates up to 96k. When using Eleven Rack with Pro Tools HD sessions with a higher sample rate, you will need to either connect Eleven Rack to your HD hardware via the analog connections. When connected via USB to the host computer running Pro Tools HD, the Eleven Rack Control Window will be available as well as features like the embedded Rig settings. In HD, MP or other LE systems where Eleven Rack is not the primary I/O, there is no audio streaming via USB. All audio connections should be made digitally (ideal) or via analog connectors.