▁upgrade ). ▁Un like ▁semi - h ollow ▁body ▁gu it ars ▁such ▁as ▁the ▁Gib son ▁ES - 3 3 5 , ▁which ▁have ▁a ▁center ▁block ▁to ▁promote ▁sust ain ▁and ▁reduce ▁feedback , ▁the ▁Cas ino ▁and ▁its ▁cousin , ▁the ▁Gib son ▁ES - 3 3 0 ▁are ▁true ▁h ollow - b od ied ▁gu it ars . ▁This ▁makes ▁it ▁l ighter , ▁and ▁l ou der ▁when ▁played ▁without ▁an ▁ampl ifier , ▁but ▁much ▁more ▁pr one ▁to ▁feedback ▁than ▁semi - h ollow ▁or ▁solid - body ▁elect rics . ▁ ▁Early ▁versions ▁of ▁the ▁Cas ino ▁had ▁a ▁spr uce ▁top . ▁Through ▁ 1 9 7 0 , ▁the ▁Cas ino ▁head stock ▁was ▁set ▁at ▁a ▁ 1 7 - deg ree ▁angle ▁and ▁the ▁top ▁was ▁made ▁of ▁five ▁l amin ated ▁layers ▁of ▁ ▁map le , ▁bir ch , ▁map le , ▁bir ch , ▁and ▁map le . ▁ ▁With ▁the ▁exception ▁of ▁the ▁John ▁L enn on ▁models , ▁subsequent ▁Cas inos ▁have ▁been ▁made ▁with ▁ 1 4 - deg ree ▁head stock ▁angle ▁with ▁five ▁layer ▁all ▁map le ▁l amin ated ▁to ps . ▁Current ▁versions ▁have ▁a ▁l amin ated ▁map le ▁top , ▁sides , ▁and ▁back , ▁and ▁a ▁ma h og any ▁neck . ▁ ▁Factory ▁string ▁gauge ▁guide ▁for ▁Cas ino ▁ ▁Per ▁the ▁E pi phone ▁String ▁G au ge ▁Guide , ▁the ▁Cas ino ▁comes ▁with