Preamp tubes usually cause problems through noise or microphonics. If noise, you will hear hiss, crackling, popping or similar issues. If you hear squeal, hum or feedback, it is typically a microphonic tube. Noise from microphonic tubes will typically increase with a volume increase.
When should I replace my preamp tubes?
How long will tubes last?
- Preamp Tubes are generally at their best 2 - 3 years.
- Power Tubes are generally at their best 1 - 1.5 years.
- Rectifier Tubes are generally at their best 3 - 5+ years.
Do preamp tubes wear out?
Preamp tubes are more compact and don't have to work as hard, so they tend to last even longer, or seemingly forever if you've been waiting for them to go bad so you don't need any excuses to try a new set.
