Can I use 4 or 6 Ohm speakers with the AXA25?

The AXA25 is only rated to be used with 8 Ohm speakers and we would not recommend using it with 4 or 6 Ohm speakers. Using the AXA25 with 4 or 6 Ohm speakers could result in the amplifier overheating, which in the long run could damage the unit.