yes, Ross just use a usb to ac for power, like the one that comes with your iphone.
Chris, what other negatives have you heard?
I won't speak for Chris, but I'll share my $0.02 on where they fall short.
The Phase is trying to close the gap between digital convenience and vinyl feel. Similar to products like the Rane 12, they get close, but it's not perfect.
1200 turntables have three main issues:
1) Needle contact - the tone arms get gross, and the head shells stop making great contact so that you don't get a clean signal without cleaning them well.
2) Vibration sensitive - In club environments, the bass can be too much and give you shitty needle performance.
3) Pitch Fader Calibration - Mk2s are particularly notorious for developing a real dead zone right at 0%. You have to do all sorts of wonky stuff to work around it.
Phase fixes 1 and 2. But it is still affected by the dead zone because it's taking a simple RPM reading from the device. You're still essentially "picking your poison" on what issue you want to deal with.
It's way more appealing than the Rane 12 (unless you travel with your rig, like a mobile DJ) in which case I think the Rane has a bit of an edge over a turntable. But Rane screwed the pooch because the 72 sucks (just my opinion).