What better to power my 82db Magico Q5

Considering moving to a Soulution 711 states 300watts into 4 ohms. My current Devialet 800 states "Maximum output 2x800W under 6Ω"

Where i get confused is current. the soulution has 145A of current, which is massive. Devialet provides no measurement for current.

What is more important? Current or watts per channel, when it comes to powering a super inefficient speaker like the Q5?