Same amplifier !  Different tube !   Different voice !
Trying different voice by tube and adapter.Needn't change tube amplifier anything.Just connect tube and socket adapter.
Brand: Amptata
Quantity : One
Top is ECC31 6N7G.  Bottom is 6SN7 6N8P CV181 B65 ECC32 ECC33.
Copper used for excellent conductivity.
Outstanding soldering taken in every adapter.
Accept custom manufacturing,if you need other types, please contact me.
Ceramic socket and gold pins for long life,Tough gold pins with a thick gold plating.

A: ECC31 6N7G
B: 6SN7 6N8P CV181 B65 ECC32 ECC33
The design of your tube amplifier is the use of B. 
If you want to try A. Only need to connect A and the adapter socket in together.
Then connect to your amplifier,begin to enjoy music.
Needn't change anything about your amplifier.DataCaciques