Speakers are only one aspect of the sound. Why did you buy a preamp and amp that is inferior?
And if there are so great, why arent all speakers spherical. If they were, engineering-wise, the best solution then most speakers would long be spheres and no one is in the busi was to not make their interpretation of the best sound. What peer-reviewed engineering papers can you produce that say spherical is best?
"Why are we not being catered to? " I’m not so sure the industry is ignoring the demands of the marketplace, as you seem to imply. Where do you see the unmet demand for spherical speakers? It’s a legitimate question to ask why the sphere is not more commonly employed, but you have a faulty assumption in the mix. Have you yourself ever communicated to a dealer or manufacturer a wish for spherical speakers? Probably not, right?