Need advice on a good Phono preamp


I currently have a Music hall 5 with upgraded kimber wires .
It has a new Benz Micro Gold Low output moving coil cartridge.

I have currently a low cost opera audio PPM-6 Phono preamp.
I get a low hum in the speakers and it does not seem to do the job.

I can sell it for a loss to move it and can invest up to 700.00 US for a used phono that works well with a low output MC .5MV....

Or should I just sell the cartrige and buy another MM or High output MC???

I used a PS audio PCA2 preamp and a Halo A-21 Parasound paired with Revel Preforma 30's. I listen to rock and jazz.

I use good Nordost and cardas cables.

Thanks in advance for any info......

Ben
128x128sansui80
I tried the Nova Phenomena and the PS Audio but it just didn't have the warm sound I was looking for. Having heard all my records through a Conrade Johnson for many years and now using Rogue mono blocks, I was looking for something different. The George Wright P200 is a downright steal and a super bass sensitive tube phono amp. Not only did it have more slam, it was pretty darn quite too. It's a 2 part phono amp with separate power and output. I use Synergistic Research Looking glass out the output source. Separate balance controls so you can match it up with MM or MC cartridges and straight to your amp without running it through a preamp. Works great with my Project 9.
I agree with Zeal that the Wright P200 is an excellent unit, especially for the price. But you are going to have to look for a used one because George Wright passed away last month.
Jolida JD9 Tube phono pre-amp. Can accomodate both MC and MM cartridges, adjustable gain, and sounds gorgeous. 6moons highly rated! Saw one for sale here for $375