From the Emotiva forum :
 Quote:
While the power supply is similar when comparing the XPA -2 to the XPA -5, the ouput stage is where the two differ.
The XPA-5 uses 2 toshiba 2sc5200 and 2 toshiba 2sa1943 output devices per channel.
The XPA-2 uses 5 toshiba 2sc5200 and 5 toshiba 2sc1946 output devices per channel.
Better dampening factor ='s much more definition and control off the bottom end.
More power , particularly at high level transient peaks.


M80s/VP160/QS8s/EP350; M22s; M3s.