I was going to use the Sennheiser HD600 with the HD300. Have you had a chance to compare the HD650 with the HD600?

Thanks to everyone here at head-fi (especially sacd lover) for bringing the HD300 to our attention. Ordered mine today with the tube upgrade.

sacd lover, thanks for the digital cable recommendations. As for the sound of the dAck! it kinda grows on you like the sound of good analog. It's very quiet.you don't really realize how quiet it is until you listen to something else (toshiba 3950) Sean, My dAck! came with RCA in. Would you...

Sean, when you were using the Perreaux headphone amp did you have to float the ground on your amp? I was having no luck latching on to a signal with the dAck! until I floated the ground on my V.5 then I had no problem. This occurred with two out of the three transports I tried with the dAck...

Has anyone found a digital cable they liked with their dAck!? Also, has anyone found a transport that works great with the dAck?