hello all, i'm trying to find a good mono amp for my son and need some help. most of the brands i had in the late 80's early 90's are considered entry level or junk these days from what i've been reading (hifonics, orion, ppi, etc...) i've always heard about how good Zapco amps are and found a new ST1 STUDIO X Series 400w for $114 shipped and can't help but think this can't be a Zapco for that price. i haven't been able to find any reviews on this amp. does anyone have any experience with this amp or would i be better off with an Alpine MRV-M500 or Kicker CX series. any other suggestions on a quality amp for 2 Alpine SWE-10S4 subs.