Question about GS "Healing Amp Sticks"

[phalaeo]

Need a little help with the math here as to how the Healing Amp. will stack. If I make a 10%, 20%, 30% Healing amp item, I know it doesn't stack additively- as far as I've heard, it's multiplicative stacking.

I'm trying to figure out if this is worthwhile to make the most out of the aura on my Clonk when she's raid healing- If my aura hits for 18 and I have a 10/20/30% Amp item, what would my aura hit for?

Thanks for help with the math- I'm not a numbers person.

[Heyas]

Need a little help with the math here as to how the Healing Amp. will stack. If I make a 10%, 20%, 30% Healing amp item, I know it doesn't stack additively- as far as I've heard, it's multiplicative stacking.

I'm trying to figure out if this is worthwhile to make the most out of the aura on my Clonk when she's raid healing- If my aura hits for 18 and I have a 10/20/30% Amp item, what would my aura hit for?

Thanks for help with the math- I'm not a numbers person.

Should hit for 30ish

[Glenalth]

As far as I can tell, rounding (er, truncating rather) seems to happen at the end of the calculations.

18
+ 10%
19.8
+ 20%
23.76
+ 30%
30.888
Drop decimals
= 30

You can also just multiply by 1.716 to find out how much you'll be hit for.

If you're human, you can work in another 10pts with 30% more amp.

[phalaeo]

Thanks, guys. Did a Shroud today and decided to take the splurge up to the first two tiers.

For anyone referencing this thread, here are the numbers for 30% Healing Amp. and Cleric Auras.

CLR 18/ MNK 2

16 Base Aura
18 Base and Ardor Clicky
23 Base, Ardor Clicky and 30% Healing amp.

Heals
472 Base
623 Base and Ardor Clicky
710 Base, Ardor Clicky and 30% Healing amp.

[Glenalth]

100% + 10% + 20% = 132%