In all honesty this is what i expereinced too.
Over the years I have been pondering why is it that some of my recordings sounds just plain and un-ivolving but when I play it in my car it sounds simply amazing or decent. I started off this hobby from car audio and slowly went into home audio. Now I would not place my self as a car audio freak but I did get an amp and changed the head unit. The amount of money I have invested in my home audio is way more than what I spent in my car. Unfortunately playing the same recording just does not justify that amount of money I spent.
Thats what got me all sparked up on searching for an answer which lead me to Michael Greens website. Going through his website made me think differently and made me realize that its not all about your equipments, speakers and cables. To get a good sounding system is not about how expensive or best sounding equipments that have won major awards. Nor how famous a particular brand is that some may swear upon it. But its about tuning and getting whatever system you have to fit in better with your surroundings.
As I started my journey taking Michaels advise I began to see and hear more into those recordings. More information was I able to gather, more involvement and finally more passion towards this hobby. Which ultimately got me thinking seriously into building my own dedicated room. Before this my system was placed in my living room. What never changed was my equipments that I have invested previously but what has tottaly changed was my mind set in this hobby.
Now if i had know this earlier would i have still bought my expensive setup well no. I would have got something more functional and enough to power my speakers and load my room up with music and tune the hell out of it lol!