when you start to compare different models within the onkyo and denon lines (as example)you see the failures when something new comes along the 1st thing to get the chop is usually the amp section, with a pre-amp this is ne-gated by amp you associate with it and which ever speaker combo you decide to run with..

the option of the 10-14 12v outs was the option to use monoblocks to power the speakers to start with..

the option to pass through 3-4 isn't a preference i like, the option of 10-14 gives me the option of running 2-4 multi channel amps or the option of of running 7.1-11.3 in a monoblock setup, I prefer each amp have their own 12v trigger. i never liked the daisey-chain principle..

the option should be there if you choose to run with it, each person to their own flavour for connecting amps..