Well I finally received my Axetrak. I paid $359 total for it. I've had it for a few days now and I have to say that I am quite happy with it. Still need to tweak with my amp settings to get the best sound.
Physically the Axetrak is quite small. It is about the size of a small cooler and only ways about 16lbs. It is covered in a charcoal gray carpet material and the overall build seems very solid. There's a handle on top of it so you can move it very easily. I've got mine tucked under my workdesk. On the front is a 1/4" speaker input, an XLR out, and a red LED that lights up when a signal is fed to it. Also, there is a fuse holder. The speaker is fuse protected. You're instructed to start with your volume low, and slowly increase the volume until the LED starts to glow brightly. If you drive it too hard, you pop the fuse. Not knowing its limitations, I managed to do this my first time playing into it. Fortunately, a spare fuse is included. I'd still have a few spares anyway.
Inside, there is a 6" Eminence speaker and a permanently mounted dynamic cardoid type microphone, similar to the SM57. You cannot move or adjust the mike. No big deal in my view.
So, I connected the speaker out (8 ohms) from my new
Carvin Legacy combo to the Axetrak, and connected the XLR out into my mixer for recording.
Those of you familiar with the Legacy will know how loud it is when the volume is set to anything above 1. I had the volume set to 6 on my Legacy at the 100 watt setting and although I wouldn't say that the Axetrak is exactly "whisper quiet", it is very manageable and definitely suitable for bedroom levels or late night jamming. Put the Axetrak in a closet or wrap a blanket around it and then you get "whisper quiet". You can easily hold a conversation at normal speaking levels with the Axetrak at this volume setting. All my gear is in a spare bedroom on the 2nd floor of our house and my wife who was downstairs a floor below didn't even know I was playing. (mission accomplished on the noise level

) My dog even stayed with me (and no, my dog is not deaf!)
There is a deep plug on the Axetrak that can be removed for extra bass. However, with the plug removed, the volume level out of the Axetrak is significantly louder, but still within tolerable bedroom levels.
As far as sound quality, I really like how it sounds with the deep plug removed. The sound is very huge. Lots of good crunch. Almost like a 4X12 cab, but not with the face-ripping volume.
I haven't used it in a live situation yet, but I imagine it would work very well.
The manual says that it was designed for overdriven
distorted tones. However, the cleans and bluesy semi-cleans sound very good as well. I played my EMG 85 and 81-equipped RG570 and a stock single-coiled Fender American Strat through it and the Axetrak sounded very good with both guitars, both clean and distorted.
I'm still tweaking my amp eq settings to get the best recorded tone. But so far, I am very happy with this unit. I'll post some samples hopefully this weekend.
For the money, if you want that sweet spot saturation from your tube amp and don't want to lose your hearing (or your spouse) I definitely recommend trying this little box.