Are upgraded power cables for subwoofers worth it?

Used to be the power cables don't do much camp, then I tried a few power cables. 

On my HT setup, I noticed that after installing PC's to my SUB's and amp, that the power draw on my power conditioner went up, quite a bit. At idle everything is drawing more power. When things start to hit, my current draw jumps up way faster and higher.  Sound wise, it's cleaner, but didn't really notice much more, maybe better dynamics.

The sub on my 2ch, took measurements before and after. Test tone, measure, change cable measure again. Got almost 2db higher on the test tone after a cable swap. Bass felt deeper, fuller. After a couple days, I turned down the gain on the sub.

My 2ch sub is a Martin Logan sub array, it had a ok 14g cord. Swapped it with a 10g. 

Weirdly, when I swapped PC's with my streamer, didn't really notice anything. Same for changing power supplies on my TT, no real difference. 

Yes.

It's been argued that there are better "bang for the buck" power cables than Audioquest, but can't think of a single occassion where their $100(+/-) cables have not provided a sound quality inprovement to anything I've connected them to.

Regarding wire gauge, the current limitations to your gear are:

• Breaker size at the panel (usually 15-20 amps)
• Wire size in the wall (should be right-sized for the breaker, so usually 14-12 awg)
• Power cord gauge to the equipment (no need to be bigger than what's in the wall)
• Fuse size in the equipment

Your equipment should not see more current/amperage than the limiting factor of the above conduits.  Considering even larger amps rarely input over 10 amps of current, a case could be made that a 14awg power cord is plenty big for even large power amplifiers.  Not trying to change anyone's mind, but that is what the science says.

Hello Mitch2,

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@jrareform,  at one time I had many cables.   I have whittled down the herd over the years but still keep some.  I keep thinking I will list them but then forget about it for a while.