Phono stage hum


Dipping my toe into Tubes for first time.

Have been using simaudio moon lp5.3 phone stage.

today trying Manley Chinook tube stage.

getting what sounds like ground loop hum with the chinook and my thorens 160 super... tried with a different turntable (cheap teac) and no hum....

any ideas? 
otherones

Showing 1 response by uberwaltz

Does the Chinook run a  lot higher gain than the simaudio?
Is the gain adjustable on it?
Could account for some of the excess hum
Could be your expensive tt and wires are more sensitive to the gain difference than the cheaper tt ?

My older Teac tn300 never gave me any hum no matter what was in front or behind of it, My Nottingham on the other hand is a LOT more sensitive to things like cables, ac power lines, phono stage gain etc.