The AxePort Pro is a bus-powered USB audio interface with one mono jack input for your guitar and a stereo mini-jack for headphones.
The blue part of the casing is aluminium, and it feels like it should stand up to life on the road. There are knobs on the unit for input gain (there's bags of it, but no clip lamp, though it's easy to get the level right) and the level of the headphones output, which goes very loud indeed.
The guitar preamp is a winner, resulting in very natural-sounding recordings, and the output is clean and clear, with a well-defined treble that conveys the crispness of your tone. The device can run at up to 24-bit/96kHz and the driver allows very low latencies, down to about 5ms total, with direct monitoring, too.
We found that an overall latency of 9ms was enough for glitch-free playing through Guitar Rig 3 LE in standalone mode (at 44.1kHz), but most impressively, we could run GR3 LE in High Quality mode at the same latency.
To top off the package, you get a velvet sleeve to keep the AxePort in, a USB cable, a USB stick containing the drivers, and a beltclip. It's not cheap, but the AxePort Pro is sonically impressive and seems built to last.