MULLARD CV4033 - Very rare 1958 - Mil wrinkle glass, Halo GT. - Whyteleafe "A" Production Prem. Grade Long Life ECC81:CV4024:12AT7 Factory Tested (Plug&Play Ready to Use) Early 1956 BRIMAR CV4033 with

Early 1956 BRIMAR CV4033 with Square Getters

MINT NOS NIB Rare 1961 Mullard CV4035 M8214 Box Plate Wrinkle Glass Military production

exchanges or tube rolling at our expense as it says in the Terms and Conditions on the web site

CV4035 premium grade version of the late 1950s-early 1960s Box Plate CV492 aka CV4004 is one of the best from Brimar in the ECC83 types (click Larger Photo)

12Axx to 6SL7/6SN7 adapter will let you use common tubes like 12AX7/ECC83

MULLARD CV4033 - Very rare 1958 - Mil wrinkle glass, Halo GT. - Whyteleafe "A" Production Prem. Grade Long Life ECC81:CV4024:12AT7 Factory Tested (Plug&Play Ready to Use) Early 1956 BRIMAR CV4033 withNOTE: After spending $$$$ on tooling and various prototypes, we have fitted Special Grade Flying Leads tubes with Custom Thermo setting Bases developed in house. It is a multi step, labor intensive process. Each lead is straightened and cleaned to ensure perfect fusion with the base pins in the silver soldering bath. Process is painstakingly slow, so we will be adding a few tubes at a time to the inventory. Tubes are Plug & Play, Ready to Use. Brand