@ Melkior, yes,the compatibility issue, you have to be careful of the impedence matching with Ayon, if you read past post in this thread, you can better understand this,or call u.s.a. tubes, they are good about helping people with their Ayon gear, whatever you use with Ayon, you have to have 50 koms impedence on your amps or better or you will run into this issue, other than that,I would look into your tubes age, and see if any of them may be going out,check the tubes and see if they are working properaly, your player has 8 tubes inside of it, 4 for the output and 4 in the power supply. cheers!