Which tubes are particularly suitable for Marshall amplifiers in terms of sound and technology?

With Marshall, it is worth choosing the tubes to match the respective amp concept instead of simply using any standard configuration. For many classics and modern series such as JTM45, Plexi, JCM800, JCM900, JCM2000 DSL/TSL or JVM, mainly EL34 are relevant, depending on the model also 5881 / 6L6, with the JTM45 the KT66, and in the preamp stage 12AX7 / ECC83. Especially with Marshall, the first preamp tube has a major influence on response, noise and the clean structure of the overdrive sound. That is why a selected 12AX7 with normal gain (S4GB) is often the more sensible choice for V1 than the most aggressive possible preamp tube. In the power stage, S4GB Highgrade power tubes are particularly interesting when durability, stability and reliable stage and studio operation are required. Many suitable Marshall replacement tubes are available from BTB in selected quality, on request also as premium-matched power tubes (S4GB).