Foxpro inferno--low power - FoxPro Inferno Electronic Predator Caller

I have 2 other etronic callers. I bought the fox Pro because they have the best sounds. All FoxPro are lower power, but good sound.
The Inferno is fine for the eastern calling area; but lacks the power output for western 'ote hunting over longer fields. aquick evaluation of power output is look to the battaries. A high power unit can not be driven by AA batteries.