Two Tested 12AX7 CBS Audio Receiver Guitar Pre-amplifier Vacuum Tubes. Gray 17mm ladder plates, dual spacers, clean pins, D type horseshoe wire getter frames and top getter flashes. Please review the photos for more detail. Low side balanced test results for Gm. 34/35 and 31/32 (low but OK).For Gm, 32 is the 60% reject point. For reference we use a calibrated Military TV-7 Tester. Our standard service is US Postal 1. The item "12AX7 CBS Audio Receiver Guitar Pre-amplifier Vacuum Tubes Tested Pair" is in sale since Monday, January 11, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "chukv" and is located in Westwood, Massachusetts. This item can be shipped worldwide.