Martin Backpacker Acoustic

what is the purpose of guitar humidifiers?

i mean i know what they do, but my brother has had countless acoustic guitars over the years and they never cracked or anything, and ive had one for a couple of years now and its in perfectly good shape… so why should i use a humidifier?… the reason i ask is because i ordered a martin backpacker acoustic guitar from musicians friend and some people on youtube said you need a humidifier for it……

sometimes depending on the humidity and temperature of the guitar, it can cause it to go out of tune, even in electric guitars. my guitars can even go out of tune sometimes when it rains. it just makes it easier. i have never heard of any of my friends guitars cracking or anything.

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