Bi-ampling will make sense ONLY if speakers you use are very difficult to drive and create gross distortions with both of these two configurations.
For example, lets assume that the source of the distortions lies in low frequency area. If you use one monoblock then these distortions are spreaded across the spectrum including ear sensitive mid-range. If, on other hand, you use two monoblocks then you limit audible distortions , in this example, only to bass area which is less ear-sensitive and keep your midrange and treble pristine.
The power by itself tells me very little as some speakers need high current but others need high voltage.
All The Best
Simon
For example, lets assume that the source of the distortions lies in low frequency area. If you use one monoblock then these distortions are spreaded across the spectrum including ear sensitive mid-range. If, on other hand, you use two monoblocks then you limit audible distortions , in this example, only to bass area which is less ear-sensitive and keep your midrange and treble pristine.
The power by itself tells me very little as some speakers need high current but others need high voltage.
All The Best
Simon