It's a Musical Paradise MP-301. The only changes I have made to it would be the tubes (stock Chinese tubes really leave a bit to be desired).
I honestly couldn't ask for more from a $200 (about $230 delivered) all tube headphone/speaker amp except to maybe put the headphone jack on the front... maybe one day I'll take a look at how easy that will be to do!
Add another $50-75ish in tubes and you've got yourself a killer budget amp. (I'm currently running a matched pair of NOS RCA 6v6GT and tong sol 6au6)
I'd be interested in getting the Musical Paradise, but i'd like to asses the risk of swapping it with my Gizmo.
And since you've owned what i've owned- you might know