Ditto! I don't really want all the cables sticking out on 3 sides (4?). I like to have all on the back with 2 mic/guitar and 2 phones on the front.
Michael

And why USB3 or USB3.1, because there is much more voltage and ampere in it. You can get more steady power.

 
Yeah, you can get a little more current at 5 volts DC with USB3, and that is helpful for low noise.  The nice thing about the preamp chips in the RME is that they run naively off of 5 volts rather than needing conversion to 18 like most analog controlled preamps, though they suck up a significant amount of current to compensate.  It is a little more compact.  I personally would never trust bus power to begin with and would probably keep the thing plugged in at all times.  

The math

rumleymusic

And why USB3 or USB3.1, because there is much more voltage and ampere in it. You can get more steady power.

 
Yeah, you can get a little more current at 5 volts DC with USB3, and that is helpful for low noise.  The nice thing about the preamp chips in the RME is that they run naively off of 5 volts rather than needing conversion to 18 like most analog controlled preamps, though they suck up a significant amount of current to compensate.  It is a little more compact.  I personally would never trust bus power to begin with and would probably keep the thing plugged in at all times.  

Amperage is inversely proportional to the voltage. If the transformer is in the device (interface) it shouldn't change the load on the usb port. Total watts are equal on both sides of the transformer. P=IxE. Voltage conversion shouldn't be a factor after it leaves the usb port.
 
Rocky

Amperage is inversely proportional to the voltage. If the transformer is in the device (interface) it shouldn't change the load on the usb port.

 
Yes, current and voltage are inversely proportional as you say.  At 5 volts, a greater amount of current is required to power an opamp than if the voltage rails were 18volts.  The power required is the same, ie. Volts*Amps=Watts.  I didn't mean to imply the draw on the usb supply would be different.  
 
I just meant to say that all the circuitry necessary to utilize the opamp's power needs from a 5 volt supply is very conveniently integrated into the chip itself, rather than needing to ramp up the voltage beforehand.  

gswitz
In addition to the FX on the UCX it has an 'AutoLevel' feature on 4 channels which is nice.
 
@Mike V., make sure you check out RME DigiCheck. You get that as well as TotalMix.
http://www.rme-audio.de/downloads/driver/digicheck.php
 

Yes. I've had RME gear for over a decade and been using Digicheck for ages too. It's a great diagnostic tool, not to mention a great vanilla recording interface for live work.

but the AVB feature simply sets the unit above the Babyface.

 
Albert,
AVB (on the Ultralite AVB) only works on Macs right now. I don't know how easy or hard it will be to get this working with Windows...

jbraner

but the AVB feature simply sets the unit above the Babyface.

 
Albert,
AVB (on the Ultralite AVB) only works on Macs right now. I don't know how easy or hard it will be to get this working with Windows...

John,
 
I was reading about the AVB feature. One way the Ethernet can be used (if not using the USB) is to connect it to the Mac.
 
The one I was referring to is the AVB feature is to expand the inputs by using two Ultralite AVB and connect both units via the Ethernet cable, I believe this is possible for both PC and Mac ?
 
http://www.motu.com/products/avb/ultralite-avb/networking.html
 

With M'day sales coming up, it occurs to me that I could buy either a Saffire Pro 40 (+I'd need a FW card)or a Scarlett 18i20 and still recoup some money from my Tascam us1641. The Tascam us16X08 won't be available at my local shop till July, and I suppose there might be one online with these 20% sales.
I guess the only reason I still think about FW is the option to add a UAD Satellite and perhaps keeping my I/O separate from other usb stuff.
Anyway that is about the range of my budget for the end of May and I am considering it.
Michael