Hi up for consideration is a single used 12ax7 / ecc83 tube what you are buying is one only tube , testing between .6 and .ma where 1.2ma per section = 100% emissions a mix of USA and Australian makes these are audio tested as well . they sound fine. what you are buying is one tube , for more click on the quantities box at the top thanks for looking. If there is a particular tube you are trying to obtain then send me a message and i will see if i have it .....there are so many tubes to cover that listing can be quite a job to keep up with..... Please note that I can send parcels through budget postage that can save you some cash however ebay will not cover you if the parcel is lost .....Australian economy post does register the item and issues a registration number but does not issue tracking with it .....please send me a message regarding this prior to checkout if you wish to do this. If you choose economy post then YOU become responsible if the parcel is lost and no refunds will be sent for non collection..