What should you pay attention to when buying tubes?

The most important thing when buying tubes is the correct and therefore approved tube type. You should then consider how much you want to spend, whether the tubes should be matched to each other or additionally selected, for example for microphonics or low noise.

NOS tubes are common for old radios; for modern audio devices and guitar amplifiers, current tube types have advantages due to better selection possibilities and a better price-performance ratio.

When it comes to sonic topics or upgrades, it is advisable to seek advice from a reputable tube specialist dealer, for example BTB Elektronik.