When it comes to keeping an analog circuit operating in its linear region, we need to have a certain amount of bias—making sure it is always on—running through it. Various terms can describe the level of that bias; among them are Classes A, A/B, B, and so on.
But bias also has other meanings, some of which aren't all that helpful. For example, when we have a personal bias against or in favor of this or that, we often find our options limited. If you have a bias toward analog it's unlikely you're as open to digital wonders than someone with a more open mind.
What would happen if our personal bias were more tuned to the end results rather than how we got there? A bias towards great three-dimensional audio is perhaps more valuable than one focused on low distortion and high bandwidth.
When it comes to making great music in our homes, it's probably best to focus on the desired end results rather than the technology of how to get there.