Speakers and amplifiers show audiophiles are confused.

That’s why it is futile to try to do an app for pairing audiophile equipment, not so much of a problem for professional equipment.

You dont need an app. Most speakers are between 4-8 ohms. The power of the amp can be as high as you like provided you dont abuse it. The power can also be lower than what the speaker needs if you dont listen loudly. So as you can see the requirements for matching are not hard to achieve. 

As for the sound quality, this is not something which can be matched other than using trial and error because nobody knows why amplifiers and speakers sound the way they do. 

OP… “With this in mind the best system should be the most natural sounding with the most headroom to accommodate different genres. ”

This is a very good thought. Yes. But, as all things in high end audio it is not easy.

For me, I took disks with music around that I liked and auditioned equipment… over decades as I upgraded various components. I made those disks sound better… but a lot of the music sounded less good.

For various reasons I realized I needed to listen carefully to real music and instruments, so I could establish a ruler against which to measure my system and prospective components. So, for a couple decades, I would listen to any acoustic instrument I could. I got season tickets to the symphony… and went to 20 - 30 concerts a year for a decade. The long term exposure to real acoustic music gave me the “ear” to search out the right system.

I completely changed my approach… starting with speakers… from planar to Sonus Faber dynamic. Huge move towards natural… then upgraded those a couple times over fifteen years… then my amp… then everything else… one by one getting rid of all the solid state gear. These changes, one by one made all musical categories sound better and better while admittedly compromising a small bit on electronic music.

Over time, I slowly recognized and reconciled the difference between what I thought treble should sound like (the horrible distorted stuff I heard in concerts in the 60’s and 70’s) and what real instruments sound like. Brass sounds like brass not amplified bacon sizzling.

My pursuit of high end audio reflects my views on life over time… it’s all black and white as a teen… and all shades of gray with great nuance as you age.

So, putting a great system together is a lot of work. Once you get speakers of the character you want… that is just the start… you need an amp that delivers the signal it needs to make it sound the best to your ears. A huge solid state amp is likely to give you bass that will slap you in the chest and or stick minor details from venue in your face but completely fail to reproduce the nuances of a a bell, or cello, and more importantly the rhythm and pace that conveys the emotional connection… this goes on. All of your components need to be carefully chosen and compatible with each other to not loose all the nuances of real music.

@kenjit As for the sound quality, this is not something which can be matched other than using trial and error because nobody knows why amplifiers and speakers sound the way they do.

That's what I'm talking about. The only way to get the most out of your speaker is to have an amp and crossover that are designed for that speaker and its drivers. Some say on this thread that high end audiophiles aren't confused, seems like trial and error over such expensive equipment is the definition of confusion.

@ghdprentice Love your story and it seems the perfect answer to what's natural. I recorded actors for a living and I would say natural sound is eating lunch with Anthony Hopkins and then recording him on set and having it sound the same. It never really is the same our brains always translate the real experience and when we turn on our music systems. 

I only know of one piece of hi-fi equipment that actually sounds like real life and that is my Steinway and Sons Spirio/r grand piano it will playback songs with a digital engine that has over a thousand levels of dynamic range per key stroke. It sounds exactly right, there are no microphones or speakers. 

Many of us understand @donavabdear 

I only know of one piece of hi-fi equipment that actually sounds like real life and that is my Steinway

I could't agree more and can completely relate. When I observe my young man (apple of my eye) play in the band it's intoxicating, but when I'll ask for a acoustic drum freestyle solo in the garage is when it becomes much more intimate.