1、Quantity : One
2、Top is 5687. Bottom is 6N6 or 6N2.
3、Copper used for excellent conductivity.
4、Prefect handmade product by suzier.
5、Outstanding soldering taken in every adapter.
6、Accept custom manufacturing,if you need other types, please contact me.
7、Ceramic socket and gold pins for long life，Tough gold pins with a thick gold plating.
Different tube ! Different sounds !
Trying different voice by adapter.Needn't change tube amplifier anything.Just connect tube and socket adapter.
B: 6N6 or 6N2,ECC88,6922,6DJ8,ECC85,6N11
The design of your tube amplifier is the use of B.
If you want to try 5687. Only need to connect 5687 and the adapter socket in together.
Then connect to your amplifier,begin to enjoy music.