That said I've never had the pleasure of listening
to anything north of around the £10k mark
I've listened to gear well north of that and I certainly don't have "golden ears" (I don't think many do) but the TL;DR is that you hit diminishing returns way before £10k.
Ultimately, we're talking about signal reproduction here, and inexpensive gear can put out some seriously accurate sound thanks to onboard DSP processing that uses software to compensate for less than amazing hardware. As long as the sound reaching your ears is correct, doesn't matter how it was achieved.
The one thing you can potentially gain once you get in to the realm of paying thousands of dollars is oodles of power from the amplifier and oodles of power handling from the speakers, which may or may not let you begin to approximate the sound of live music.
If you have ever had the pleasure of hearing an orchestra perform live, the average SPL (sound pressure level) may not be that high, but the fleeting momentary peaks from something like a timpani might be north of 100dB. That's a bit of a feat for your stereo system to pull off and there's no substitute for horsepower there.
But even then, this doesn't necessarily cost megabucks.
Yes. And for large rooms, IME dealing with the room itself quickly becomes the challenge.
I heard this system in person at this event. A million dollars of objectively great gear, and the end result was it sounded like the PA system at a high school football game.
The reflections in that room were a nightmare. Look at the giant glass wall behind the seating area, perpendicular to the speakers. Holy jesus. So you have the speakers putting out some massive waves, and then you have waves reflecting off of the glass wall with nearly equal energy, and then you have everything coming together and canceling out and/or creating resonances... right at the seating area. Absolutely insane, absolutely pathological.
Ultimately, we're talking about signal reproduction here, and inexpensive gear can put out some seriously accurate sound thanks to onboard DSP processing that uses software to compensate for less than amazing hardware. As long as the sound reaching your ears is correct, doesn't matter how it was achieved.
The one thing you can potentially gain once you get in to the realm of paying thousands of dollars is oodles of power from the amplifier and oodles of power handling from the speakers, which may or may not let you begin to approximate the sound of live music.
If you have ever had the pleasure of hearing an orchestra perform live, the average SPL (sound pressure level) may not be that high, but the fleeting momentary peaks from something like a timpani might be north of 100dB. That's a bit of a feat for your stereo system to pull off and there's no substitute for horsepower there.
But even then, this doesn't necessarily cost megabucks.