Seen a lot of talk regarding this gadget but not anyone that actually has measured on it. So have done some

And the results are bad news!
I have used a high voltage diffprobe so all amplitude values are x100 times.
Measured with no load, 4ohm load and 100ohm load. Results can be seen below
Burst frequency=8Hz
Internal burst frequency=1kHz
Falltime=260ns
Risetime=4.8us
Pulsewidth=16,7us
Amplitude=226Vpp
Amplitude inc undershoot=348Vpp