Does anybody know if Sennheiser HD 600 HD contact Springs are still available?     Hello I love my HD 600 headphones but I fear I need to repair which will involved placing the contact spring helps grasp the right side headphone cord plug. I think I just broke the right side plug itself...

    I am going to need more of an explanation on just how you do it than that. Above is a picture of my modem which I already think has a gigabit switch built into it if that one is acceptable maybe I could use it. I am also showing a picture of the connectors on  my ThinkPad T410 laptop. I...

Hello for a long time I was using my much liked tube amplifier, DAC, headphone set up with a 82 foot USB repeater cable to get my audio from my music videos to my television where I listen and watch them. I thought my set up was great but it wasn't. Once I bought a laptop and started using it...

Well then will you know offhand if the pen out for the Yugoslavian  6HM5 EC900 driving tubes have a few or many commercially made adapters to  more commercially available amplifier sockets than the 7 pin triode socket they use or is 7 pin triode sockets comment in commercially available...

OK I don't know if anybody here will ever believe me but I did see that running my amp 24/7, I don't mean with music I just mean leaving it on, created a tremendous improvement in the sound even with the stock tubes. So consequently I wanted to make it 24/7 capable. I started this thread which...

obviously if you run tubes 24/7 they are likely to burn out three times faster than were you to only run them for eight hours a day. But if the tubes are cheap enough like $15 for a set of four tubes which is about what it will cost me with the tubes I am talking about bought in bulk I think it...

  Hello what gibosi has stated above has given me food for thought. Quite a while ago I posted that I leave my little dot MK IV amplifier on 24 seven because I noticed such a large improvement in the sound running this amp 24 seven. At that time I was warned that perhaps doing this can result...

Which is the least expensive of the ones that are right up there with the best of them?

So were you looking at tubes in the 6SN7 family would you only look at what people have to say about type and brand and not look at this transconductance? And if you did look at transconductance is it always posted as GM and the datasheets order of their other ways to post transconductance other...

  Well you didn't say it, but from what you decoded for me already I am thinking IH much mean heater current which is appointed to me for if I am to use my little dot amplifier with my octal power tube adapters and not exceed the heater current limitations I will have to limit the power...

OK data sheet from duncanamps because they link to many resources really does seem great, but looking at the screenshot below could any of you all give me a source to decode the abbreviations they are using. I mean under the 6SN7-GT rating designation they have the abbreviations VH, IH, CGK, CGA...

Do you think there is such a thing as that handpicking tube seller we should like? I mean handpicking via tube testing.

How much do you think your preferred run of the mill 60's-70's Sylvania 6SN7GTB could varying one from the other. Were you able to get hand-picked (via tube tester) choices of this tube would that be much preferable all make little difference?