Probably several factors involved here.
1) Things are tight and it is tax time.
2) People that can afford to buy $6K amps often do so i.e. "flavour of the month" club. CES just took place and they saw something else that has their mouth watering.
3) Their preferences and / or system goals have changed. Many folks are moving from big systems to smaller systems. In the process of this change, they are swinging from SS behemoths to tiny tubes.
4) These amps don't have enough sonic colourations to keep them happy / band-aid the rest of their system.
5) The amps aren't performing up to snuff due to a lack of available current i.e. each should have their own 20 amp AC line. As such, they blame the amp when there are other problems.
6) The heat and power consumption of these amps are more than they bargained for.
7) They don't have enough space for these amps. Two amps instead of one, both generating heat and requiring more space to dissipate that heat, etc....
8) After purchasing these amps and dealing with trying to locate them in their existing rack using their existing cables, they now realize that they have to buy more cabling, probably of various lengths. They don't want to go through finding suitable cabling, pay the price for such or re-configure their entire system
9) The rest of their system is below the sonic potentials of these amps. They therefore blame the amps for what they hear.
Need i say more ???? Sean
>