▁of ▁the ▁original ▁pat ent ▁and ▁is ▁therefore ▁not ▁subject ▁to ▁a ▁license ▁fee . ▁The ▁Edge ▁Pro ▁and ▁Edge ▁Pro ▁II ▁differ ▁from ▁the ▁original ▁Edge , ▁as ▁they ▁are ▁able ▁to ▁accept ▁strings ▁with ▁the ▁ball - ends ▁still ▁attached , ▁and ▁have ▁no ▁lock ing ▁stud s . ▁Due ▁to ▁the ▁lack ▁of ▁lock ing ▁stud s , ▁the ▁trem olo ▁is ▁in ▁some ▁ways ▁inferior ▁to ▁the ▁models ▁it ▁rep laces ; ▁however , ▁the ▁lower ▁profile ▁design ▁and ▁erg onom ic ▁improvements ▁mean ▁this ▁distinction ▁is ▁not ▁clear ▁cut . ▁The ▁Original ▁and ▁Lo - Pro ▁Edge ▁are ▁still ▁produced ▁and ▁are ▁available ▁through ▁Ib ane z ▁Part s ▁deal ers . ▁Position ed ▁as ▁top ▁of ▁the ▁line ▁lock ing ▁trem olo ▁systems , ▁the ▁Original ▁and ▁Lo - Pro ▁Edge ▁are ▁among ▁the ▁most ▁expensive ▁pieces ▁of ▁guitar ▁hardware ▁in ▁mass ▁production , ▁with ▁a ▁unit ▁cost ▁higher ▁than ▁the ▁F loyd ▁Rose ▁Original ▁and ▁the ▁Sch aller ▁F loyd ▁Rose , ▁and ▁indeed ▁more ▁expensive ▁than ▁even ▁a ▁number ▁of ▁Ib ane z ▁gu it ars ▁( including ▁ones ▁with ▁lower - t ier ▁lock ing ▁trem ol os ). ▁The ▁Original ▁Edge ▁is ▁still ▁being ▁used ▁by ▁Ib ane z ▁for ▁certain ▁R G ▁series ▁re issues , ▁and ▁all ▁ 2 0 1 0 ▁Ib ane z ▁J EM ▁and ▁JS ▁series ▁gu it ars . ▁ ▁See ▁also ▁▁ ▁Ib ane z ▁R G ▁Ib ane z ▁Z R , ▁the ▁other