Yes...I was very lucky to hear the prototype HO. It did not have the new driver or amp in it. So basicly it was all the standard VTF-3MK2 components in the new enclosure.

Without the turbo, the HO prototype was more dynamic. Seemed to have more punch, and more transparent. With the turbo, it seemed to add more dynamics to the lower end at higher volumes.

It is not small though. It is slightly bigger than the VTF-3MKII, and with the turbo, there is pretty much no way to hide it.