Bowers and Wilkins, 801 D4

Hi all, i'm looking to get some new speakers, maybe Wilson audio sasha DAW, or B&W 801 D4, my amp is the Audionet Humboldt integrated , 

Specs & Pricing

Output power: 320Wpc into 8 ohms, 460Wpc into 4 ohms
Frequency response: DC–700kHz -3dB
THD+N: <-100dB at 1kHz
SNR: >120dB (A-weighted)
Channel separation: >140dB, 20-20kHz
Dimensions: 450 x 320 x 505mm
Weight: 61kg
Price: $55,000, i have mk 1  sasha's at the moment, sounds v-good, would my amp have enough grunt , for the B&W,s, they do have two 10" base drivers, on paper they are easier to drive, but as we know in real life, not always the case , i am in England, so Wilsons are £40,000, B&W £32,500, a big difference,  thanks