Sorry if this has been discussed, what are the thoughts on using a DAC/PreAmp with a variable out to lower the input into the Crack, and thus allow a little more variability in the Crack's volume, or better allow the crack to be used with low impedance headphones? Heck, what about just setting the Crack's volume to 50%, then using the variable pre-out of the DAC to control the volume?
I'm leaning toward a Maverick TubeMagic, using the non-tube variable output into a Crack (which I just purchased un-assembled on Head-Fi - I'm very excited!). There are other options that have variable pre-out.