Thanks for your response Johnk. I do understand that in the audio business more expensive not necessary means to be better. Which in this case my M80s sound better to my ears that other more expensive brands that I have listened in the past. What I try to do is make great speaker better. Although, I'm a firm believer that good components with the right combination can improve a system. I will like to heard from Ian and Alan or anybodyelse out there on their take, if getting better caps would improve the speaker. I read about other companies that people improve an already good speaker by making some caps or cross over upgrades.