Excellent responses so far.
More than most components, cartridges do need some hours on them to play their best. Performance usually changes as the suspension loosens up. This in turn may require adjustments to your setup. Everything in vinyl playback is very interactive.
As Rushton said, can you describe more specifically what's wrong with the sound quality? Compare it to your CDP if that will help you describe it. We won't bite.
More than most components, cartridges do need some hours on them to play their best. Performance usually changes as the suspension loosens up. This in turn may require adjustments to your setup. Everything in vinyl playback is very interactive.
As Rushton said, can you describe more specifically what's wrong with the sound quality? Compare it to your CDP if that will help you describe it. We won't bite.