To be clear the OP was actually referring to an earlier thread of mine where he had stated that something like a Hegel H390 would have been a mismatch for the (my) DB1's. He wasn't shot down, I simply asked him to elaborate on how he had concluded that an amp costing £5k could be 'too good' for a pair of speakers costing £2k on the basis of cost alone.
I respect his view but don't agree - as other posters have pointed out earlier in this thread it's entirely plausible to achieve a system you like where the elements are mismatched in terms of cost.
That's just my view as I feel the notion of 'spend more get more' is just pure marketing UNLESS you feel it sounds better.
However, my point/question was based on the fact that I see numerous opinions that cite one piece of equipment being 'too good' for another based purely on the RRP and nothing else. I am very much of the view that, if it sounds good then the cost is absolutely irrelevant.
If I read many of Arkless' comments then I am kinda with him that in a normal listening environment most amps (regardless of the cost or wpc) will drive any speaker adequately. He's far more knowledgeable than I am in discerning, technically, what constitutes a 'good' amp from a 'bad' one. My standpoint is that of a layman and, personally, I buy into very little hifi hype.
I was (and still am) considering something like a Rotal A11/A14 or Yamaha A-S801 for my £2k speakers and I am not driven (sic) by the price point - more by how they sound and how long they will last.
We all have differing views I guess.