Well... I've been running my ZP3 (custom with built in step-up transformer and switchable between MM and MC for the 2 arms on my deck) for less than a week but I feel compelled to give a quick review.
When I first got them and hooked everything up, I encountered an almighty hum which I never had with my old Dynavector P75.... Fortunately, with Steve's help, we managed to isolate the issue to a ground loop problem which got sorted out by running a heavy gauge ground cable from the ZP3's ground terminal to a ground on my mains conditioner. Once I got all that sorted out..... (4 days ago!) I settled in to become acquainted with it.
It beats the Dynavector hands-down.... no contest.
There's a warmth and weight that I absolutely adore. Wide open soundstage and airy..... but what really got my juices going was how silent this thing is with the quiet sections of music.... best way I can describe it is that it has a kind of "blackness of sound" that I've seldom found at any price level.
Just so natural and real.
I've since relegated my Dynavector to the bedroom set-up and placed the ZP3 into my main listening room and it's not even run-in yet... in fact, I'd have no reservations in saying that this thing is superb fresh out of the oven. I can't wait to see how good it gets once it's fully broken in.
It does like to run when fully warmed up though..... Takes a good half-hour from cold for it to show it's true colours.... so now I leave it on standby mode at all times it's not playing.
I've used a lot of phono stages over the years..... never ever quite found precisely what I was looking for...... I must say that as far as favourites go, the best one I've ever had was an old 6922 unit built by a friend many, many years ago which is now long gone (both phono stage and friend now grace a different plane of existence

)....
But the ZP3 is fast climbing the charts and with a little experimentation rolling tubes, I have a feeling that I may just be able to surpass the much loved and missed 6922......
Simply superb phono stage.... love it to bits.
Do you yourselves a favour and give it a go if you need a phono stage. I seriously doubt you will be anything less than fully satisfied.... you may even fall in love! ;D