Jmcgrogan2 - In theory, if the goal of audio equipment is to reproduce the original signal as close to the original as is possible then it would be expected that as the various pieces of equipment get better and better the resulting sound should become more and more the same among different pieces of gear. A well designed pieces of gear where no expense was spared should have less room for improvement than a middle of the road piece of gear would.
As an example, I used to own a 2000 SS Camaro and there were quite a few aftermarket bolt-on options for upgrading the intake and exhaust with a real improvement in horsepower and torque. I had a friend that worked at Dinan working with BMWs and at one point they were trying to improve on the OEM exhaust and after they essentially stripped the system do to what you'd find on a race car could only document 2 hp on the dino. BMW had designed the exhaust system so well that there really wasn't any room for improvement with a bolt on product.
As an example, I used to own a 2000 SS Camaro and there were quite a few aftermarket bolt-on options for upgrading the intake and exhaust with a real improvement in horsepower and torque. I had a friend that worked at Dinan working with BMWs and at one point they were trying to improve on the OEM exhaust and after they essentially stripped the system do to what you'd find on a race car could only document 2 hp on the dino. BMW had designed the exhaust system so well that there really wasn't any room for improvement with a bolt on product.