Prima Luna is a company based in The Netherlands that designs and manufactures valve amplifiers that not only reproduce that classic valve sound but have made several improvements that enhance the sound quality and reliability of valves.They have designed a sophisticated adaptive auto bias system while running tubes at the minimum dissipation or power and giving more slam and bandwidth through superior output transformer design.Their hand-made point to point wiring is just one example of their dedication to performance and quality.They have evolved the classic valve sweetness of the iconic Marantz 1960's Model 7 and 8 valve amplifiers to incorporate modern technologiy designs and presented them in a beautiful classic aesthetic.