If the the main conductor is copper, ICs are coax, the speaker cables are the correct gauge, neither are excessively long and both make good contact with the sockets then they'll be about as good as a cable can be. In an electrically noisy environment balanced cables are a good idea and it's best to go for low capacitance cable for TT interconnects longer than a couple of feet. All of that is achievable without spending much cash and will add no discernable (or probably measureable) noise or distortion.
Now look at the specification for a loudspeaker driver, this is a link to one that I'm currently using in a design... I would describe this as a high quality driver but it still has a frequency response within it's usable range that varies by 6dB (Seas are unusually honest with their response curves). And this is a very cheap driver with around 13dB variance. In electronics (transport, pre-amp, power amp) both responses would be considered gross distortion. Loudspeakers are not easy to design or build and are worth spending a bit of extra money on. Same goes (to a lesser extent) for the electronic components. The aim of many amplifier manufacturers is to create the equivalent of a 'straight wire with gain' and I don't think any have achieved quite that to date... so I find it strange that so many people spend such a disproportionate amount on the wires in their system.
I think you'll find spending most money on the elements of the system that make big transformations will get you the best value for money. By 'big transformations' I mean converting digital to analogue (DAC), converting the grooves in a record to an electronic signal (cart, TT and phono amp) and turning the electronic signal into the audible movement of air (speakers).
Now look at the specification for a loudspeaker driver, this is a link to one that I'm currently using in a design... I would describe this as a high quality driver but it still has a frequency response within it's usable range that varies by 6dB (Seas are unusually honest with their response curves). And this is a very cheap driver with around 13dB variance. In electronics (transport, pre-amp, power amp) both responses would be considered gross distortion. Loudspeakers are not easy to design or build and are worth spending a bit of extra money on. Same goes (to a lesser extent) for the electronic components. The aim of many amplifier manufacturers is to create the equivalent of a 'straight wire with gain' and I don't think any have achieved quite that to date... so I find it strange that so many people spend such a disproportionate amount on the wires in their system.
I think you'll find spending most money on the elements of the system that make big transformations will get you the best value for money. By 'big transformations' I mean converting digital to analogue (DAC), converting the grooves in a record to an electronic signal (cart, TT and phono amp) and turning the electronic signal into the audible movement of air (speakers).