Or a tube socket going bad or a tube that is loose in a failing tube socket. Take a look inside. Could be fixable by merely straightening up the culprit tube in its socket, but then you may want to make plans to do some freshening.
Hi pitched hum from TT pre-amp?
Hello,
I have a Sonic Frontiers SFP-1 pre-amp. My rig is a Scoutmaster table and a Benz Micro Glider (MC). While playing a record last night, between songs I heard a relatively hi-pitched tone; probably a bit below the 1 Kilohertz frequency (test tone). I gently tapped the top of the TT pre-amp and the tone stopped! The pre-amp contains 4 tubes; two Sovtek 6922's and two 12AT7A's. Do you think I have a tube on its way out?
Any feedback would be welcomed.
I have a Sonic Frontiers SFP-1 pre-amp. My rig is a Scoutmaster table and a Benz Micro Glider (MC). While playing a record last night, between songs I heard a relatively hi-pitched tone; probably a bit below the 1 Kilohertz frequency (test tone). I gently tapped the top of the TT pre-amp and the tone stopped! The pre-amp contains 4 tubes; two Sovtek 6922's and two 12AT7A's. Do you think I have a tube on its way out?
Any feedback would be welcomed.