Welcome to the forum,
you thought right, the newer ECX110N are with the WTX500 head.
ArminAn apple a day keeps the doctor away
D112XLT/8, D210XLT/8, D210XST/8, D410XLT/8, D810RP/4,
WP100B, WT1000, WT1205, WTX260, EM5
ESH Souvereign IV,V,VI fretted and frettless
ESH Various V,ESH Notorius IV and V fretted, Ibanez Acoustic
H&K Bassmaster, Boss GT6-B, Furman PL8-E, Korg DT1 Pro