jay73 - To answer you last question first i.e.
Is that only for system that employ high end components?
Tha answer is no - you do not have to have high end components - but you will need some pretty darn good cables
My modest System MSRP around $20k Canadian...
- Bryston B135 integrated amp
- Bluesound Node 2
- Simmaudio Moon Phono Stage
- DIY turntable with Audio mods Arm and Denon 103 Soindsmith modified cartridge
- Gershman Acoustince Sonogram speakers
This is by no means what I consider a high end system, but it sounds better than most $100k+++ systems I have auditioned in some very good audio stores
My very affordable $300 mini system also sounds pretty amazing with the cables I have installed
Good cables are key to,,,
- improving dynamics to realistic levels
- improvinf clarity and details - those little micro details of the venue acoustics and reverberations
- lowering the noise floor
- achieving a realistic holographic 3D image
Is is pretty easy to achieve once the cables are sorted
Take a read of this link
If you are just starting out take a look at Audio Envy cables - great value and very good performance.
I made my own Helix cables, which are extremely good
Helix Cables - what other members think
Regards - Steve