Are inputs & outputs balanced or unbalanced?

With Spark EDGE you get 4 instrument inputs:

• Input 1 and 2:
  Unbalanced inputs for guitar or bass, with a balanced XLR input for standard dynamic microphones.

   

• Input 3 and 4 (combo jack):
  These inputs accept either ¼ inch (6.3mm) or XLR connectors. You can connect a stereo output or two mono outputs. The ¼ inch connections are unbalanced, while the XLR connections are balanced.

The outputs on Spark EDGE are unbalanced.