Is high end gear unreliable?
In my opinion, some of it is unacceptably unreliable, and a lot of the rest is too finicky about matching. I mean to say, if the only two brands of car out there were Yugos and Jaguars, I guess I'd probably own a Jaguar, and put up with all the headaches, but when it comes to cars I don't have to: I can buy a Lexus and have 90% of the fun of the Jag, at near 100% reliability, plug'n'play. I don't have to worry about whether it will create some bizarre interaction with my garage, my parking space at work, my household wiring, or my relationship with my girlfriend. It doesn't need me to buy doubly-expensive tires or new shoes to drive with, or a different type of fuel.
By contrast, I recently had a Naim Nait5i integrated amplifier that sounded just great (maybe the best sound I've ever heard from my own rig, come to that), but which suffered from an almost comic festival of performance quirks, the climax of which was a conversation with Chris West of Naim USA, in which he asked me -- with a straight face! -- if there was a television or an incandescent light IN THE SAME ROOM. I mean, can you imagine the nerve of some aspiring Naim-owner, having a television and an incandescent light in the same room with his home audio rig? Who does this snitty little customer think he IS?
Several people in here have mentioned Bryston -- and Bryston certainly deserves its reputation for rugged build quality -- but I had a pre-owned Bryston 3B plugged into a casually-acquired preamp from another vendor (and, in the other direction, into relatively high-efficiency speakers), and the noise floor was so high that my girlfriend asked me if the water was running in the next room.
Manufacturers need to pay a lot more attention to real-world applicability, it seems to me -- starting with voicing their stuff in real-world living rooms and not anechoic chambers, and continuing through some sort of industry standards for amplifier input impedance and sensitivity (one for tube and one for SS?), and proceeding with all due dispatch to a major overhaul of their approach to shielding and power transformation. I mean, really, folks: in what other hobby could you reasonably expect to pay $3500 for a block of metal that can't be guaranteed to work to its own design specifications when it's plugged into your garden-variety wall outlets? It's an outrage that these guys can blame the disappointing behaviour of their temperamental, foofy crap... on YOUR ELECTRICITY. It's an OUTRAGE.