MIKELAP
Headphoneus Supremus
No difference. I have both.
Brown base and grey plates, black base and black plates.
If there is a difference I can't hear it.
The code GY refers to the glass shape. Not tube internal structure. Pointless putting GY because as you can see they are the same.
Cheers Badas.
I have a few brown base purchased from Langrax and noticed this black base on a sellers site who I am currently dealing with.
May as well get him to add it to my parcel.
i bought both types from Langrex the black and the brown base if you want black just ask for it that's what i did