The Maxima Amator is a bookshelf speaker from the Italian maker Sonus Faber, part of the company's Maxima range and carrying the Amator name also used on the Electa Amator III. It presents a fairly demanding low-impedance load to the amplifier.
Key specs that matter
Sonus Faber quotes a response of 35 Hz to 35 000 Hz, an unusually wide window for a bookshelf model. Sensitivity is 88 dB, nominal impedance is 4 ohms, and Sonus Faber recommends amplifiers rated between 25 W and 125 W.
Pairing
Since 88 dB is only average and the load drops to 4 ohms, a medium-powered amplifier that can supply decent current is the sensible partner, not a low-output design. A rigid stand that brings the speaker up to seated ear height suits it.
Alternatives
Sonus Faber also makes the Electa Amator III, another bookshelf speaker that carries the Amator name.