The SE output is simply one half of the balanced output.
The BHA- 1 is designed to drive headphones either SE or balanced witout any special tricks or compromise.
Got this right off the schematic.
If people prefer this amp with balanced output, what can I say? They like what they like!
BTW, the manual states that this amp outputs 6 Watts per channel into 32 Ohms.
It states Maximum 6W...
Here's some number quotes http://bryston.com/products/power_amps/BHA-1.html
Edited by ardilla - 12/21/12 at 12:53pm