I'm also biased towards quality products even if it didn't offer any
improvement only because of the 'feels good' factor. It's nice
to have good build quality, who can deny that.
But coming from a DIY electronics backround, you will find even the best
audiophile amplifier to be low quality before it hit production. Specifically
what I'm trying to say is. Have you ever seen a DIY amplifier on the test
bench with transistors slapped on scraps of heatsink, point to point
'rats nest' wiring, circuits on a protoboard, it's a mess. This is how
amplifiers are created when the designer prototypes the design.
This same mess will sound the same as the final product which looks
pretty, the only difference is the build quality, the fancy printed circuit
boards, the custom machined enclosures, heatsinks, connectors, etc.
The pretty factor really influences a person, even me, but it would be
better to judge an amplifiers on the test bench to see what it really does.
Here is an example of something I built.
Pretty circuit board.http://dreadlordpk.50megs.com/cgi-bi.../PcbBottom.jpg
Same design, same performance. /hehe