Deciding on a phono preamp


I have a Thorens TD160b MKII turntable with an Infinity Black Widow tonearm and a Grado Green cartridge. I think that I have had the turntable and tonearm since the early 80"s and the cardtidge since the late 90"s. I can't remember ever using this turntable let alone with any kind of a decent system so I have no idea what it actually sounds like or is capable of.

I now have a fairly decent solid state system that I am considering connecting it into however it lacks a phono input... don't they all now.

Preamp - Anthem AVM-2
Amp ATI 2000 series (200wpc)
Speakers Energy 2.3i
Sub 15" 500 watt sub (kind of home made).
Blue truth interconnects
Flexegy-6 River wire to the speakers

I am trying to get a feel for how much I should invest in the phono preamp.

I was contemplating just getting a preamp in the $100-$200 range but if the TT and arm are worth it I was thinking of moving up to something like the Pro-ject tube preamp and then getting another cartridge.

Any thoughs??
pechichi
i have a z-phono parasound pre-amp i have had for about 3 months it is in perfect condidion. i have just bought a new much more expensive pre-amp and would be willing to sell you this one. it is a very good enty level preamp. you can go to parasounds web site and read about it. let me know if you are interested
thanks
wayne
I'm using a Parasound zphono with my tube integrated Primaluna. Liked it better than the internal phono stage that was in the PL when i bought it. I have a Pro-ject Xperience 1 and have used a shure VMx15, Ortofon Super OM20 and a Grado Gold and they all sound great.

Someone recently on this board mention that going from the zphono up to the next step would require a phono stage costing about $600 to make a significant step up. I dont know. but this comes up alot.
you could look for in that price range an "Adcom" model 565 preamp.This is an excellent pre built with high quality parts and it's phono section is very quiet and quite the performer even compared to many very expensive units of the day.