General. MacBook Pro - How To Identify Models Print to PDF 26 March 2026 12:48 Updated Please see information on the Apple website: http://support.apple.com/kb/ht4132 Related articles Welcome to the Allen & Heath Help Centre PA Series. What are the specifications for the SPDIF output? General. Recommended WiFi router and basic setup General. Recommended USB Devices General. Gain and Operating Levels