- Feb 14, 2021
- Reaction score
- Some City, USA
Unless you know what you are doing and have the skills to bias your own amp its never a good idea to swap in tubes even when they are the same tube type. There could be many factors at play, its chancy, playing the odds on your amp and putting it at risk. I would not do this myself unless my amp was on my bench and I had the meters and tools at the ready. Tubes are not light bulbs.Throw 'em in! Unmatched isn't as big a deal as people make out. If you really want, you could match them into two pairs so that the combined current of each pair (ie each side of the output tranny) is similar.
Vacuum tubes are super tolerant. You were just running EL34s at TWICE their design impedance and it sounded great!