Art audio preamp need volume clean or .......

It will do for a while if it's not too worn out, a new one is the best and may even sound better for it. Volume pots are the worst component for reliability in the audio chain.

Cheers George

George I agree maybe I will start looking for pots, thank you

George it's sounds better, I tried it this morning, 

jayctoy, if you ever need assistance or guidance on a repair moving forward I will be happy to assist you.  Verdant Audio is the new distributor for Art Audio in the US.  

Hope you are still enjoying this units.  

Best regards

Just our 2 cents, we would clean the pot and get back to listening. 
Good luck!