Suppliers of electron valves and components for guitar and audio amplifiers, radio and industrial use.

phone: 1800 EVATCO

FAQs

Technical Support

We are often asked for technical support however due to the nature of tube amplifiers we are limited in the help we can give.

Tube amplifiers contain lethal levels of voltages and can hurt or potentially kill you even if switch off. This is the main reason we cannot provide technical information. If you know what you are doing then you won’t need the support of anyone over email or phone. Secondly any technician will tell you that in most cases you really need to see the amp before making recommendations.

  • What will we support you with regarding technical information.
  • Products selection (Choosing the right product)
  • Understanding what tubes go with your amp
  • Limited technical information e.g. questions that won’t put you in harms way.

Here are a few of our most common questions

  • Will these tubes sound good in my amp?
    • The answer is “no one knows”, the reason is because sound is personal and what you like someone else might not.. In saying that I believe that I could get most tubes to work in most amps without any real issues.
    • I definitely believe some work better than others and I personally haven’t tried every option out there.
    • I would suggest (and often do) that you look for people who have a similar amp (and you like there sound) and try those tubes as a start.
  • Do the tubes I use make a big difference?
    • Yes, they will. To be very clear though its my opinion that there are so many factors in determine the sound of a amplifier that thinking tubes are the ultimate answer to your search for tone is probably futile
    • I believe that the following is often
  • The cheapest mod you can do
    • Look to change your preamp tubes.
    • Try using a 12AU7 or 12AT7 in you first slot to tame the amp..
    • I often keep a few preamp tubes around and test them in different positions.. you would be astounded at how must difference to the sound it can make.
  • Do you bias amps?
    • No sorry. techs are setup ready to go for this and we just don’t have the space.
    • I will add that I believe trying different preamp tubes is my first love in chasing tone but BIASing an amp to my taste is the second favourite thing to do
    • Also, let you tubes run for a while before biasing them, I often find tubes a bit harsher at the start until they boil off some electrons :) and settle down, then I bias
  • Do you sell bias probes?
    • No Sorry.. they just aren’t worth it.. there are plenty around though
  • What are the best tubes to buy?
    • There is not such thing.
    • There are definitely peoples favourites or types that amps come out with but we sell all the top brands and when you blind test people most can’t tell.. Yes I know there are people reading this right now saying they can and maybe they have some super power but I am yet to see any A/B scenario that solves this age old question for n other reason than sound is personal. What one person likes the other doesn’t.
  • What reverb tank goes with my amp?
    • You need to look for the number on the side or top of you existing reverb tank, then search the web site.
    • If you want to see what you can subtitle it for have a look at this link
  • What grill cloth looks good with my amp?
    • Go black, you can never go wrong.. Nah not really
    • Similar to sound, a look is personal..
    • Try looking at google images and get some ideas form there
  • How do I glue tolex on and what do I use?
    • I use good old contact glue from selleys Kwik Grip
    • Heres a few tips though
      • Lay you telex out in the sun for a while.. It will help with remove any creases etc
      • Map out on the back (the cloth side) you amp.. each side top etc.. allowing room on the edges to wrap inside the amp
      • spread a thin layer.. well covered but thin.. no pooling of glue. onto both the cloth and the timber..
      • LET THEM DRY TACKY… Sorry to yell but you can let these almost dry completely and they will stick (don’t let them dry but let them get very tacky)
      • Have the right tools ready..
        • Sharp decent scissors
        • A stanley knife
        • A roller (to flatten the tolex)
        • Do Not stretch the tolex, it needs to be played on then rolled flat but stretching will hurt it
        • Watch you tube… there are some great videos on the web
  • Do you sell kits?
    • No, we have consider these however the consumer just spends hours of our time using us for the technical support. Yep, it happens all the time now..
    • If you buy a $60 chase that does not mean I will help you build it 😉
    • We may in the future but not right now
  • Can I call around and pick up my tubes?
    • No, sorry we are a online only store.

That should help a bit..

Feel free to write with other questions

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