▁related ▁AD ▁en velope ▁for ▁cut off . ▁ ▁A ▁string ▁section ▁is ▁similar ▁to ▁the ▁AR P ▁Om ni . ▁ ▁Poly ▁Syn th , ▁and ▁a ▁two ▁voice ▁Le ad ▁Syn th ▁similar ▁to ▁the ▁Od ys sey ▁and ▁a ▁five ▁way ▁mix er ▁with ▁four ▁unit ▁outputs , ▁a ▁s tere o ▁pair , ▁a ▁line ▁mon o ▁and ▁an ▁X LR ▁out . ▁▁▁ ▁There ▁are ▁ 1 6 ▁memory ▁locations , ▁but ▁these ▁do ▁not ▁provide ▁storage ▁of ▁slider ▁settings . ▁The ▁synth es izer ' s ▁ 8 0 4 8 - based ▁micro controller ▁uses ▁battery - back ed ▁C M OS ▁S RAM ▁storage ▁to ▁store ▁and ▁recall ▁ 1 6 ▁sets ▁of ▁on / off ▁dec isions ▁about ▁which ▁wave forms ▁and ▁mod ulations ▁are ▁turned ▁on ▁in ▁each ▁of ▁the ▁four ▁sections , ▁and ▁lead ▁intervals . ▁Using ▁LED s ▁the ▁player ▁is ▁vis ually ▁directed ▁to ▁the ▁sl iders ▁critical ▁to ▁the ▁sound ▁selected ▁but ▁their ▁settings ▁are ▁not ▁updated . ▁ ▁This ▁necessary ▁twe aking ▁and ▁fine ▁tun ing ▁is ▁the ▁weak ness ▁of ▁the ▁Qu ad ra . ▁▁ ▁Like ▁the ▁Mo og ▁Pol ym o og ▁keyboard , ▁the ▁Qu ad ra ▁was ▁not ▁a ▁true ▁poly ph onic . ▁It ▁used ▁divide - down ▁circ uits ▁for ▁the ▁Om ni - style ▁string ▁section , ▁including ▁A DS R , ▁L FO , ▁filter ▁and ▁V C As ▁for ▁the ▁Poly ph onic ▁Syn th ▁section . ▁Both