I’ve made this little page because I’ve been asked several times how to replace those strange tubes on those chinese amplifiers (amplificatore a valvole), that are so popular nowadays.
For Italian readers: this page has been the source for writing an article for VideoHiFi, a popular free web hifi magazine.
I don’t encourage tube substitutions and rolling to inexperienced people. If you’re unsure on what you’re doing, please refer to a competent technician, or ask where you bought the amplifier. Remember that working in tube amplfiers can be VERY DANGEROUS due to high voltages involved, EVEN WITH THE AMP UNPLUGGED from the wall outlet.
First, an equivalence table, please note that NOT all china-tube types are listed here, mainly because they don’t have a direct euro-american substitution. I have to thank Jogi for those tables.
If you have questions, email me.