Amp+sub on a SubCompact (B class)

[Uriahillel]

Thinking about this combo:

Alpine s-a55f (5 channel amp)

Kicker 10" sub https://www.amazon.com/dp/B01MY6O73I/?tag=caraudiocom-20

Are those parts recommended?
my current setup includes Focal components, looking for a sub+amp.

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[Kickstand Premium Member]

Because the sub is a single 4 ohm that amp will only put a max of 200 watts to the sub.
I would get a 4 channel for your front end and a separate mono amp for the sub.
Look for something that runs 400-500 watts @ 4ohms
Although Alpine is a household name brand they are expensive and IMO overrated.
You can get a 4 channel and a sub amp for equal to or less that that Alpine amp your looking at.
Sub Amp
https://www.down4soundshop.com/sundown-audio-sfb-1000d/
500 watts @ 4ohms plus more power available if you want to upgrade the sub later
4 channel amp:
https://www.down4soundshop.com/sundown-audio-sfb-200-4d-4-ch-full-range-amplifier/
75x4 @4ohms
Both amps are able to run down to 1 ohm and combined it is with in $20 of that alpine amp with the added bonus of being able to run 1000 watts into a sub if you so desire in the future