I'm a proud owner of one. It's the best Univibe out there in my opinion, and I've owned the Mojo Vibe, KR, Fulltone, etc.
The tube vibe was good, but for me it was too phase-like. Didn't have that deep, heart throb, low-end pulse that I wanted. Maybe if I tinkered with the internal trims I could have gotten More of what I wanted? I found I had to do this with the fulltone mdv2. But with the PE vibe, it did exactly what I wanted out of the box.Effectrode Tube Vibe? Their pedals always hit the spot for me. I don't use mine as much as I do my other Effectrode pedals, but the Tube Vibe with a good 12AX7 on top sounds about as good as gets to me.