The Orange VT1000 Tube/Valve Tester paid for itself on day one- I was able to select tubes from new and old batches for current use- and go through the boxes of pulled tubes accumulated over the years.
Like many of us, any time an amp went down, tubes would be replaced to “get the show going” and end up in boxes.
The VT1000 showed us which valves had failed, which were weak and which were good.
Of the good tubes, it is easy to “grade” or “match” both power tubes and many common types of preamp tubes.
If you KNOW what the tube in your hand is going to do, then you can select the tube for desired result- invaluable in the studio.
Orange’s VT 1000 saves time and money- and helps get your amplifier working it’s best, the way you need it.