Already did. Not even close.
The PH7 is a great phono pre, but no where near in the league
of the Naim or the Aesthetix in terms of ultimate tonality and
sheer dynamics.
The PH7 is well built and worth the money asked. We reviewed it
a couple of issues ago and I really enjoyed the variable loading with
the remote control, nice touch.
If I were buying something at that level, I'd probably go with the
Aesthetix Rhea, because it allows you to adjust gain and loading remotely
plus it has inputs for three turntables, which would be a plus for me.
At that price point (5-7000), the ARC is definitely a contender and you
might prefer it's sound, especially if you love ARC to say, the Nagra,
ASR, Aesthetix or the Naim with lesser power supply.
Right now, I'm using the Nagra VPS and am very happy. Nice balance between tonality, dynamics and quiet (also has 2 inputs), but it is very difficult to set cartridge loading.
Another exceptional phono stage is the Rega Ios. For 3200, it is a pretty amazing one input phono pre. Very quiet and a touch of warmth for tubes. You might want to give one of those a listen before buying the PH7, you might be surprised! Super quiet!
But when it comes to a top of the heap phono stage, the Aesthetix IO with
both supplies really tops the heap, period end of story. It's just that when you use the IO with two supplies, you need to warm up about 30 tubes just to play a record, and for me, I have my system on 12 hours a day, every day. I just don't want to be spending that much time hunting for tubes.
The IO really needs you to hand pick a good set of NOS tubes to do it's best, and that can get pretty spendy. But if it's the Ferrari you only take out of the garage on rare occasion, it does become pretty seductive.
Another thing the IO does that is very attractive, is it lets you run a balanced phono cable IN to the preamp. Only a few others like the BAT VK-10SE, Boulder and the ASR Basis Exclusive (that I know of) will do this and it does help for a quieter phono presentation.
That's why I liked the Naim Stageline with the Supercap so much. It was very similar to the IO, but no tubes. Just turn it on and leave it on.
You know how it goes, pick your poison...