Galeazzo Scarampi del Cairo

Quadrivio SGR SpA (Quadrivio) is the Milan-based investment management subsidiary of GF SRL, itself a subsidiary of Quadrivio Group SpA in Italy. In 2001, the firm was established to manage the Quadrivio New Old Economy Fund, backed by banks, pension funds, institutions, insurance companies and private individuals. Quadrivio also manages the Quadrivio Q2 fund which eschews start-up initiatives and firms in turnaround situations. Quadrivio participates in the share capital of their investee companies, supporting their growth and development process by providing them with their international and management experience.

Green Arrow Capital SGR SpA (Green Arrow Capital) is a private equity firm founded in 2000. The firm is headquartered in Rome, Italy.

Quadrivio Group SpA (Q Group) is a private equity firm founded in 2000 by Alessandro Binello and Walter Ricciotti. The firm is headquartered in Milan, Italy.

Audio Research Corp. manufactures tube and transistor-based audio equipment. The company's products include power amplifiers, preamplifiers, reference series and source components. It was founded in 1970 by William Z. Johnson and is located in Plymouth, MN.

Protostar Partners LLC (Protostar Partners) is a private equity firm founded in 2001 by Joe Haviv. The firm is headquartered in New York.

Arbo SpA provides spare parts for heating systems. Its products include heat pumps, solar thermal collectors, concentrators, air, water heaters, combustion analyzers, regenerative thermal and catalytic oxidizers. The company was founded by Leone Bonazzoli in 1968 and is headquartered in Fano, Italy.