Results range from 69.5 - 72.6 mA for current draw and 6400 (100%) - 6600 (103%) Gm for transconductance. Each tube ships packed with the test results shown in the photos. The item "Lot of 4 matched Electro-Harmonix 6550EH tubes, AT1000 tested, 2001" is in sale since Sunday, July 25, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "chelseawin-mn" and is located in Saint Paul, Minnesota.This item can be shipped worldwide.