PS Audio FGA-3-US Commercial Amplifier, 2 outputs, 8 ohms or 70v. Output A states 10 speakers Max. Output B states 4 speakers Max. PS Audio says it will work with either 8 ohm speakers or 70v. I have seen multiple systems with this amplifier power 70v speakers or 8ohm speakers in parallel without issue for years.  Unit has been tested and is working.  There is some label tape residue on the front.  Doesn't include phoenix connectors.