Hey r/headphones!

So I bought a Technics SU-V500m2 amplifier secondhand to power my turntable. Unfortunately it lacks a manual and I cant find any information on it online.

Now I want to buy myself a pair of Beyerdynamics DT990Pro to listen to my records on this system, but I have no idea if it will have enough juice to power the 250 ohms the DTs have.

Any help or maybe different headphone recommendation is welcome!