Don't Buy Into These "Trends" About ปั้มผู้ติดตาม YouTube
http://jeffreyzuop910.theglensecret.com/the-biggest-trends-in-ph-td-tam-youtube-we-ve-seen-this-year
Even cables with developed-in repeaters usually allow for an exterior electricity source for being connected. This is just a bit additional safety for your signal and should be a good idea with regards to the problem