I can think of one company making a CCS rated tube final amp (Alpha) and they are hanging on by a thumb nail with their $6K amplifier. The 9500 won't do CCS RTTY or FM at 1500 watts without auxiliary cooling for the power supply. That is why I build my own! 1500 watts on RTTY anytime.... And LOTS cheaper! Oh... And I can fix it too! 73 Merry Christmas Jim W7RY