A customer of ours has been using a microphone to measure the results in his system as a result of minor changes he has done. He's on to something- you can clearly see how distortion has changed due to his changes.
http://www.audioasylum.com/forums/otl/messages/3/36516.html
Funny- the objectivist camp says that if you hear something but can't measure it, its not real. Yet I never see them use this technique. Instead they might test one piece of equipment on the bench rather than in the system. Its not scientific! As a result, I don't seem them having any numbers at all to support their position- they are the pot calling the kettle black!
http://www.audioasylum.com/forums/otl/messages/3/36516.html
Funny- the objectivist camp says that if you hear something but can't measure it, its not real. Yet I never see them use this technique. Instead they might test one piece of equipment on the bench rather than in the system. Its not scientific! As a result, I don't seem them having any numbers at all to support their position- they are the pot calling the kettle black!