The Freya preamp has 12 dB gain available and the Aegir power amp has 22 dB gain available. Schiit's web site gives no indication that those numbers change when you run in the balanced mode (with 2 Aegirs as monoblocks) or as a single-ended system (1 Aegir).
That would indicate that the position of the volume knob would give the same volume output with either setup. So, what you are talking about is having more power available when running the balanced setup. That translates as more headroom (if your listening volume needs more power for peaks) or just a louder possible max volume when running the Aegirs as monoblocks.
That would indicate that the position of the volume knob would give the same volume output with either setup. So, what you are talking about is having more power available when running the balanced setup. That translates as more headroom (if your listening volume needs more power for peaks) or just a louder possible max volume when running the Aegirs as monoblocks.