Ultimate guide to upgrading your IEMs...how to choose and upgrade your IEMs

this is a long one but hope you find it useful. chapters: 0:00 Intro 2:20 Disclaimer 3:20 Upgrade Outlines 13:38 Upgrade Pathway: music vs tuning preference 24:20 Upgrade Pathway: upgrading your IEM 27:00 Upgrade Pathway: example #audiophile #iem #unboxing #impression #music #audio #bass #impressions #metalmusic #metalhead #review #guide #begginers #rock #alternative