Levinson 380S with sub

Can a Levinson 380S provide a line-level signal for a sub manager?

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You could use the record out but it would be a little cumbersome when changing inputs.
There seems to be both balanced and single-ended outputs.  I had hoped the single-ended output could be connected to a bass manager.
The record outs are only single ended.  Levinson does not recommend using the preamp balanced and single ended outputs at the same time (you would un-balance the signal by applying a different load to each phase).