Where can I find suitable replacement tubes for Hughes & Kettner guitar amplifiers?

For Hughes & Kettner, suitable and robust tubes for the respective model are especially important. This applies in particular to TubeMeister Deluxe 20/40, GrandMeister Deluxe 40 and TriAmp Mark 3. The amps are especially popular for their great sound variety, modern high-gain sounds, recording suitability and practical features such as Power Soak, Red Box and, in some cases, MIDI. Depending on the model, EL84, EL34 and 12AX7 / ECC83 are especially typical. For many applications, S4GB tubes are also interesting when a particularly stable, low-noise and gain-resistant behavior is required in the preamp stage. Many suitable types are also available from BTB in selected quality and, on request, matched.