Plug and play. Of course you need to install Mi apps into your phone for the configuration.

Damned.. this looks very tempting for my 2.5 storey crib

1 is not enough for your 2.5 storey, 2~3 would be sedap but of course your wifi speed must be good enough as well.

Is this with Antena any better?

This Xiaomi Pro is slightly better but nothing much differences.

1. It does not support 5GHz Wifi , same goes to Amp2
2. The Pro is capable of automatic updates, without the need of the app whereby you have to do manual updates for Amplifier 2.
3. It can connect up to 64 devices at a time, whereby Amplifier 2 can only connect only up from the 16 devices. but, Xiaomi only recommends connecting up to 24 devices.( do you think you hv so many devices to connect at a time ?

thanks, ady bought amp2, works great ^^

Will this bring down speed alot?