why sound is so different?

Tnaks Madfloyd, Im hanging here for sure! By the way what cartridge are you using now? Im interested in analog again and will be great to find a good cartridge option in the $200-$300 category .... maybe is this too low now?

I own an LT-30 and use it daily. Email me if you want and we'll talk.

The sound you describe sounds typical of not having enough gain, which would not be unusual considering the Bellari only has 30 db of gain. I could not find the ouput of the Shure you are using but to sound good with the Bellari you are going to need a MM cartridge with a significant output.

The easiest way for you to troubleshoot this is to try to borrow a phono stage with more gain (probably around 38-40 db). If that works (and I would expect it would), your options are to replace either the phono stage or the cartridge, matching up gain to the output value of the cartridge.

A very good guideline for doing this can be found on the www.kabusa.com website in the phono preamp gain computer.

Finally looks like was a set up problem,I have done everything from the beguining and now sounds great!, thanks to all for your comments.
As I mention, my cartridge is a Shure V 15 type V-MR. I just found that I can get an interesting price in Ebay so, do you consider would be wise to sell it and buy a new cartridge in the $200-$300 range or is better to keep it? my Shure was made in the 80's and I assume that after 20 years this area must develop a lot or . . . not?

Hdm, looks like the output of this unit is 3.0 mv (the information is in the KABUSA website). I forgot to mention the "MR" in the model so maybe this is why you didnt find it.