Impedance and gain compatibility are engineering reasons for the basis of synergy, however, for most audiophiles I'm of the opinion that synergy is an explanation for personal sonic preferences. Why use tone controls when you can mix and match components. Using a single brand of components would take away much of the fun of this hobby.
Only slightly more seriously, only a small number of companies are equally proficient at making source components, amplifiers and loudspeakers. McIntosh, Meridien, Sony, Krell, Harmon Group, Linn and Yamaha are some of the exceptions to the rule.
Only slightly more seriously, only a small number of companies are equally proficient at making source components, amplifiers and loudspeakers. McIntosh, Meridien, Sony, Krell, Harmon Group, Linn and Yamaha are some of the exceptions to the rule.