Mudcat said:
Actually, while agreeing with Mtrycrafts, I'll slightly disagree also. If as stated above, you are currently using 14 awg, there should be a measurable difference (with a decent sound meter), whether you hear the difference is another matter. But going from 14 awg to 10 awg is significant enough that it may be audible especially if the 14 awg uses pvc insulation (high dialectric constant of 4.6+) compared to the polyethylene in the knukonceptzs wire (dialectric constant of 2.37). The lower DC will lower the capacitive reactance which could be apparent at the higher frequencies.
But then again, you may hear squat - who knows.
Greenhill did a DBT cable test some years ago, 24ga, 16ga and 12ga. Levels matched and unmatched, pink noise and various music sources:
11 of 11 subjects identified difference with pink noise of 24 vs 12ga, unmatched
4 of 11 identified it when levels matched, pink noise

( 7 flunked)
3 of 11 identified 12ga vs 16, unmatched pink noise
0 of 11 identified 12 ga vs 16, unmatched choral music
3 of 11 identified 12ga vs 24, unmatched choral music
I would not worry about 10ga vs 14ga, nor 16.
Capacitance is not an issue to roll off highs in speaker cables but it can be an issue to an amp like Naim.
Interconnects can be an issue when the output impedance is high as from a passive preamp that follows or is the value of the volume control, and variable, compared to the input impedance.
Hayward, James 'Beating the Bafflegab & Filtering the FooFooDust,' Part 1- Marshall's Audio Ideas Guide(Canada) Summer/Fall 94
Hayward, James 'Making the Connection. Part Deux: A Closer Look at the Role of Loudspeaker Cables,' Winter 95. Reprints available from Kimberkable.
These explains it and shows the calculations and examples.