The Solo Amplifier Sixty watts of unadulterated Class A power. Italian craftsmanship distilled into a single, uncompromising instrument of sound. This is Magnetosolid®. Where Tubes Meet Solid State The Grandinote Solo is the culmination of decades of research by engineer and founder Massimiliano "Max" Magri . Grandinote has always orbited a singular obsession: why do tube amplifiers sound richer, and how can that warmth be preserved—and surpassed—without a single tube in the