Air Tight ATM-2 mechanical hum.


My new Air Tight ATM-2 emits an audible hum (which can be heard from 3-4ft away, music off) from its power transformer. Although the output at the speaker is fine, i'm curious if this indicates any defect (cuz i expect a dead quiet unit in this $9,000+ price range). Anyone has any input? I'd appreciate your contribution.
Thank you.
jaytea

Showing 1 response by toms

FWIW my ATM-2 is basically silent, though you can hear a slight hum from the power transformer if you put your ear right next to it (careful around the KT88s). If you're on the West Coast and once you're beyond the warranty I would recommend Nick Gowen at True Sound in Campbell, CA. I had a series of issues with my ATM-2 resulting from "improvements" implemented by the previous owner. Though expensive Nick made all right again.

Enjoy - this is one of the best amps I've ever owned.