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In Reply to: RE: Have you tried cleaning the tubes and sockets? posted by Old SteveA on May 23, 2017 at 08:01:52
Tightening the sockets, as in retensioning the metal bits that grip on the pins. If your tubes drop in a little "loose" and have a lot of play, it may be time to perform that kind of work. It can be a little tricky - really depends on the kind of socket we're dealing with. I'd dig around the internet to see if anyone has any guides or experiences to share.
That said, I'd start with cleaning the sockets first and tube pins, and testing the channel with some spare tubes to see if the noise goes away.
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May your tubes be lively, warm, and long-lasting. Holy be thy heater.
A dental pick is good for tweaking the contacts.
Scrub miniature tube sockets with a periodontal brush. Pipe cleaners are good for scrubbing Octal sockets.
Caig DeOxit D5 is a good contact cleaner. Anhydrous isopropanol is another OK cleaner.
Thanks guys !
I've actually cleaned pins & sockets before ,but I wasn't familiar with "tensioning" the pin sockets !
I ended up going back to my McCormack Micro Line Drive as it's the only HPA I have that isn't producing more volume gain than my (Stupidly) over-efficient headphones need while connected to my Metrum Hex DAC!
(& the McCormack has always been an "over-achiever" in terms of great musical tonality; Thanks all the same)
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