Duet Firewire Impedance Specs Chris March 02, 2021 22:36 Updated Input (Mic) = 8k Ohm Input (Line) = 8k Ohm Input (HI-Z) = 1M Ohm Main Output = 470 Ohm Headphone Output = 30 Ohm Related articles Does Duet FireWire have balanced outputs? Can I use my Apogee Firewire device through the USB or Thunderbolt ports on my Mac? Does the Apple Thunderbolt to FireWire adapter work with Duet FireWire & Ensemble Firewire? Duet FireWire User's Guide How does Duet 3 compare to other Apogee units? Comments 0 comments Article is closed for comments.