Nevertheless, the only advice I can share weather it's wise or not is to make sure whatever component or tweak one about to purchase MAKES SENSE from very beginning before one even try it.
I'm now intrigued by HUGE price drop on Crown K2 amp that could be purchased used from several pro-audio dealers for <$500. For THAT price this amp MAKES SENSE a LOT. It's an incredible amplifier with great useful features such as adjustement of input sensitivity and gain. It's usefull for biamping and for matching to your preamp especially tube one. It's also fanless and has very quiet background so for home hi-def audio this amp is giant killer that can compete against high-def common brands such as BAT, Classe, Krell, GamuT and others.
Oh it also have intepended volume controls on each channel... Isn't that great? I guess it's dual-mono design with only one power switch(doncha need 2?)