Every problem has multiple solutions, each with their own results. Some solved problems create more, others fewer, none are perfect.
I mention this because as designers and engineers the choices we make have consequences both sonically as well as economically. For example, we can solve the problem of too few watts in an amplifier by using traditional means that we know sound good: a bigger power supply, more output transistors, and bigger heatsinks; but not without increasing costs and the retail price. Attacking the same problem with unconventional techniques: switchmode power supplies, high efficiency class D, and smaller heatsinks lowers costs while providing more power, but not without sonic penalty.
I am not picking on class D in this example, just pointing out that multiple paths exist for multiple problems and each has sonic consequences that need to be evaluated for best performance within a given price point.
Engineering and designing products is a multi-faceted process with sonic twists and turns along the way. Each needs to be evaluated by how it sounds and what benefits it provides.
Life's a series of tradeoffs, and designing audio equipment's no different.
