equipment and then you'll be constantly told -
"Oh it won't sound right until you buy the £700 xyz power supply to go with it!"
I've always felt if you've paid say £3000 for a CD player it should sound right with or without extra boxes plugged in.
Lovely marketing strategy, fill your customers with constant doubt that the £XXXX box they bought maybe doesn't sound as good as it should without extra bits that cost almost as much as the original box.
Listening to the equipment...