I have searched hi and low and can not find an answer to this question. Was wondering if anyone knows if this thing is 4 ohm stable, and what it would put out into this load? On a side note, is Onkyo a sleeper brand? I just can not believe the sound that comes out of this thing for the price they go for. I have only had my Parasound on my SDAs, and the Onkyo on my 7s, but I'm tempted to say this thing sounds nearly as good if not as good as my Parasound. It has a lot of detail for it's resale price point. I really haven't had a chance to really sit down and have a dedicated listening session with it running my mains in stereo so I can not attest to it's sound stage presentation. I'd love to hook it up to my SDAs, but don't know how it will handle a 4 ohm load, and do not want to risk the amp or my speaker. Any help would be great guys.