VanHai
500+ Head-Fier
I did everything, adjusted, reinserted and plugged in 4 different tubes. No sound came out and all the tubes were not even lit up, the adapter was a dud.When you say die, what do you mean? Often times, it's the way you seat the tube in the adapter. You may have to adjust the contact points in the adapter. I do not like these pins or duck feets.