I can tell you for a fact that just becuase they are NOS tubes ,does not always make them NOS..Ocassionally you can receive a tube that tests well at the supplier,but for some reason the tube does not survive the ageing process and you will get Spitting or Sharp distortion noises etc..I recently had to send back a nice pair of NOS Tungsram 12ax7 due to this same situation..I am not in anyway saying this is your problem..Only saying its possible it is..Trying flip,flopping tubes and see if you noise travels with positioning...Also sounds like it may be a Static Electricity problem ..Good Luck
What do defective phono tubes sound like?
I have noticed some rather loud energy discharges when playing LP's.Sort of an abrupt popping.Not unlike static discharge.I do not get this with my digital playback.
The ONLY change made to my system lately has been a new arm.The problem began immediately "after" it's installation.It was just fine with the previous arm.
I don't want to make this an "arm" mfgr thing(and will not mention arm name)but wonder if the phono tubes in use(very NOS Siemens CCa's,with low hours)can be the culprit.
This is making me pull my hair out,and I have little already.
Any thoughts would be appreciated.
The ONLY change made to my system lately has been a new arm.The problem began immediately "after" it's installation.It was just fine with the previous arm.
I don't want to make this an "arm" mfgr thing(and will not mention arm name)but wonder if the phono tubes in use(very NOS Siemens CCa's,with low hours)can be the culprit.
This is making me pull my hair out,and I have little already.
Any thoughts would be appreciated.