Not sure why you'd want to connect it to the headphone socket, even if you could and you cannot, as this will then be using the headphone amp section of the DenonHello again. One more question. I got the Sennheisers for 270 euros..not bad. Don`t have them yet but they`ll be posted on Monday. Been looking for fun at headphone amps. (not expensive). There is a Project Head Box II going for 50 euros. Would it be worth it? And if it would, could I plug it straight into the Denon headphone socket or should I use the Tape Out RCA phone connections at the back? Only disadvantage with the latter is that it`s tricky to get to!!
Again, thanks for your help and advice.