- Is there a remote (No i suppose) ?
I think the answer is "no" - there's no IR sensor window on the front panel.
- Why is there LFE Input and EXT-Sub L/R Input ?
The Ext. Sub inputs were not included on the original ICBM, so we can't rely on that manual to predict what they are intending there. It seems likely that they are trying to support source equipment that offers discrete left and right subwoofer signals. If that's the case, I suspect the Ext. Sub inputs will be rarely used - most users will go to the LFE input.
- Is there an external alimentation ? Or if it is an internal one, could it be used in 110 and 220 Volts ?
The power supply is internal (the power cord connection is an IEC style, which means it's designed for a cord to go straight to the wall). It's hard to make out the silk screened text above the power connection, but it
may say "100V-240V". If it does, that suggests the power supply might be compatible with both US (120V 60Hz) and European (220V 50Hz) power. We'll have to wait for more information to emerge to be certain, though.