Arcam AVR 850 question

Hi all

Does anyone know, what voltage should be present at a Collector pin of output transistors (NJL3281DG and NJL1302DG)? Arcam calls those two rails +VLIFT and -VLIFT. Sadly, I'm getting from a separate power supply board (large caps and bunch of mosfets) +60V and -35V. Pretty sure, these should have the same value.

Thanks in advance.