@runeight I have a question that I couldn't find an answer to yet after searching everywhere. Are there variants (or "close enough" substitutes) of the 6DJ8/6922/7308 tubes that can be used with the Liquid Platinum?
Specifically, I'm wondering about 7DJ8/PCC88 tubes. Based on my research it seems that the only difference between the 7DJ8 vs. 6DJ8 is the heater voltage (7V vs 6.3V), and that in most other audio products it's okay to substitute in the 7DJ8 instead of the 6DJ8. Would this be the case for the Liquid Platinum?
Thank you, and thanks for working with Monoprice to bring us this fantastic sounding amp!