The Rubicon series also has some quality problems.
Anything produced after 1999 by Soundstream (not including the high end equipment) has had durablitlty and dependability problems.
Something like 1 out of 1000 has a problem/defect.
Caps blowing, mosfets over-heating frequently, resistors frying, etc.
Repairs covered under waranty, but who wants to send their amp back to the manufacturer, and be without music for a couple of weeks.
Once reapired problem is fixed for good.
The amps perform well and are very good for the price.
It's just not the same quality SS was putting out in the early to mid 90's.