best phono stage under 10k

What might help with respect to the radio signal problem would be purchasing a pair of inexpensive ferrite clamps, that would be placed on the phono cables near their connection to the phono stage. Many such things are listed here:

https://www.mouser.com/Fair-Rite/Passive-Components/EMI-Filters-EMI-Suppression/Ferrites/Ferrite-Clamp-On-Cores/_/N-bw7t7Z1yzvvqx?P=1z0zldu

The choice among them would be based on whether the radio signal is on the AM band, or the FM band, or one of the ham radio bands, and on the physical diameter of the phono cable, and on whether the phono cartridge is a low output moving coil type or a moving magnet or other high output type.

Another happy owner of a Herron phono stage here, btw. And I don’t doubt that the phono stage built into Ralph’s (Atmasphere’s) preamps is great as well. And I would feel safe in saying that no audio company in existence betters those two in terms of responsiveness to and support of their customers.

Regards,
-- Al

Pass labs XP 17 or 27

The Herron Audio is the best phono at under 10K :
http://www.herronaudio.com/vtph2specs.html

American gear for Americans ? Why always Herron ? 
Claiming that Herron is the best under $10k without recall its contenders is nonsense, it would be fair to mention some other phono stages compared to Herron by its user. 

I would give the PSAudio Stellar Phono Preamp a serious consideration. Michael Fremer just gave it an amazing review in Stereophile. I was a Beta tester for PS Audio when this product came out and bought and kept it because it is the best I have ever heard. You cant go wrong because, if you buy it directly from PS Audio, you can actually have an "in-home" trial and return it if you dont like it. This company is coming out with seriously good stuff at reasonable prices.