Chip, hows your starving student coming? Whats the main differences from a SS millet, and a regular millet amp? how much is one costing you to build?
I have no base of comparison to anything else as it is my first dedicated headphone amp, but I am very pleased with the sound compared to my previous source, the headphone out of my Harman Kardon AVR210. (Much more fullness especially with the bass, even with my relatively easy to drive RP-21s).
It's a similarly low-voltage hybrid design, but as far as I can tell with a quick glance that is where similarities with the rest of the Millett Hybrids end. This is much less complex, so that it can be done point-to-point without a massive tangle of wires and components.
As far as price, I spent about ~$40 grand total on parts. (Granted, I already had soldering equipment and bought my cigar box case at a thrift store for $2.60). I stuck closely to Pete's bill of materials, only swapping some backordered 150uF capacitors for 220uF ones. I also spent a little more on my tubes and sockets than I could have, but I needed to order from a supplier who took Paypal.