Try a different brand of tubes. The originals could be noisy.
Rhea Noise
Anyone have experience managing/reducing noise with the Rhea Phono Stage. The noise becomes audible from the "Sweet Seat" with gain settings above 50db. This is slightly reduced when listening from the RCA out instaed of balanced. This noise would eliminate me using ultra low output moving coils. I read many posts before getting this phono stage but I don't recall reading any about noise.