Quote: Originally Posted by TheSloth The Home/Max DAC's are a big step up from the Desktop DAC and I wouldn't recommend downgrading them. I can't guarantee that the brick is going to work properly, but then again, in terms of current draw, a Home Module + Home DAC should = Max Module + Desktop DAC in current draw. Home + Home = DAC Stage, class A output stage and 4 opamps in class A Max + Desktop = DAC Stace, class A output stage and 4 opamps in class A + 2 in class A/B. Current draw should be about the same... Re: running a Home module and a Home DAC without a DPS. I've been listening a lot recently with my HD650s and the Home/Home/brick through an Airport Express and have been really, really happy with a lot of what I've been listening to, but less than impressed with some stuff. It sounds as if the very tops and bottoms are lacking on some tracks, and as if there's less of a quick attack on faster passages than I think there should be (based on hearing the same things elsewhere). The source has been the same the whole time, so I'm not expecting it to be that that's at fault. I'm wondering whether it's possible that the brick just isn't providing the juice the amp needs it to, so have just called Headroom to have them send out a DPS to try. It'll almost be a bummer if that improves things, since the main reason for going for the config I did was to avoid having the extra box. I'd have gone for the Max module otherwise, especially as your write-up makes it so apparent how happily it works with the Sennheisers. Will report back. Considering returning the amp for a Maxed out version based on what happens. Eek. Sloth: in your table of what works and doesn't without the DPS, what constitutes "working" for you?