Out of curiosity what happened to your IA20.1?
I have a JBL GTO1004, 2 x 300wrms @ 4ohms. I bought it for my 15" HX2 but sold the 15 before the amp got here and its overkill for what I need now. Ive been babying it for under a week on a single E8 so its pretty much brand new. Got the manual in hand and might be able to find the box somewhere. Shipped to your door for $110, I need some $ to buy a smaller mono amp with half the power.
New to ca.com but Woofercooker might vouch for me, we live in the same city and I bought my E8 from him, otherwise i got straight
eBay feedback.