Also, not that this will help your current situation, but did you know that you can change the output terminals to match a 4-ohm load? The Cronus has only one set of speaker terminals, but there is an in-chassis swap (solderless, I'm pretty sure) to tap the speaker terminals for 4-ohm use. This may be a help for driving a "difficult load," which often means the speaker's impedance drops below 4 ohms.