Sirspeedy - I will be out for a week starting next week so I can let you have a listen to the pair of Amperex 6922 PQ PW white label I use in the Aria WV phono stage. Keep in mind, the tubes here are used in the MM stage as the WV uses SUT's for its MC input. But the WV phono playback is dead quiet with this tube pair. I can drop another pair of tubes in the WV and check the noise level of the Amperex in the ARC MCP-33 and get back with you on the results.