Reporting question for Amp Kit - MOD® Kits, MOD102 guitar amplifier

Product:
Amp Kit - MOD® Kits, MOD102 guitar amplifier

Question:
In the event of needing to replace a tube, what would be options for that, especially if I found vintage 12ax7s or el84s?

Answer:
You are free to use any 12AX7 (or 12AX7 variant) in the preamp and any EL84 (6BQ5) in the power section. New old stock tubes are certainly included in that list.