Ok no problem. First I suppose 1 question is what price has Sennheiser put on it? $2300 if I remember correctly. It utilizes the 4.4m balanced outputs along 4 pin xlr and single ended outputs. It is similar to the 800 in terms of tonal attributes but does have a bit more speed allowing it to punch and recover very nicely. It again is similar to the 800 in that it is a very operated unit. I typically try to avoid further opinion but I will add it is clearly a step up and recommend you get an audition on it. So far I've tried the ZMF Eikon, Utopia, 800S, LCD4 and HEK oh I don't want to forget I did spend about 20 minutes on the Z1R too. It has the ability to drive most headphones fairly well. I've only had a few hours with it but it's a pretty good amp. The amp was virgin right out of the box no burn in. So I broke its $&@**¥. It's too soon to really give you more but I'm happy with it so far and believe there will definitely be a demand for these in people's homes.