Snell type D speaker ... Amp Choice ?

was not aware Magnum Dynalab made amps.

you will need something that delivers a lot of current such as a Parasound A21, or the older 2200 Mk2.

I have owned almost all of the Snell models over the years, they all benefited greatly from high current SS amps.

Magnum Dynalab MD 305 Amp ? Never heard about it, what your ears prefer?