I'm not familiar with them, I see some are JBL also. Someone has a reference 2x75rms that is pretty new and wondering if they suck, so on a scale of 1 to 10 how good are they? Or should I say scale of Pyramid power booster to McIntosh...lol. I just need in the middle or better.

Depends on which series.

The reference 7520, think it is 2x75wrms or so. I see a lot of the larger ones on ebay from harman as refurbs, the silver w/blue center and those ugly handle looking things on the sinks. I could try it on highs if it is any good. It is put together fairly well inside.

Theyre okay id much rather have the jbl gto series though and they are around the same price

Theyre okay id much rather have the jbl gto series though and they are around the same price

I hope that is a joke, you do realize who makes the Infinity amps don't you??

Infinity/JBL/Harmon Kardon is same company right? Now I have a 7541a here also, that is 111x4rms at 4ohm. Pretty hefty for front stage if those are real ratings. I would not use all that but more can be good for SQ. I want to go old school but it would be so easy to drop this in there.

Have access to a 900w rms class d kenwood too, instead of the 350w alpine d.

Just wonder what S/N ratio and stuff is, if they would work for SQ or are mass junk. Or most importantly; should I keep those around to try as viable options?

Anyone?

An amp that does power is an amp that does power and that should be your primary concern. Your install, driver choice, and processing will make WAY, WAY more difference than the subtleties between amps.

Just wonder what S/N ratio and stuff is

Should measure "inaudible" for both.

Ok thanks for the info, I have all three here on a shelf. I want to try some older amps for non-sub but these would make a nice backup if the old school doesn't work out.