BRIMAR CV4033 - MINT NOS NIB 1960 Mil Black Plate Prem. Grade Long Life ECC81/CV4024/12AT7 Halo Getter STC Prod ENGLAND Factory Tested (Plug&Play Ready to Use) - M. Pairs/Quads/Singles as on low gain the

as on low gain the tube sounds wonderful and does not exhibit any of the “high gain detriments” on the same tracks

date codes were wiped out by Haltron relabeling process

BEL ECC88 tubes have very clean sound

Also we have potted this pencil thin tube in a High Elastance base making it even more immune to shock and vibrations

CV4033 Flying Lead is a Premium Grade

BRIMAR CV4033 - MINT NOS NIB 1960 Mil Black Plate Prem. Grade Long Life ECC81/CV4024/12AT7 Halo Getter STC Prod ENGLAND Factory Tested (Plug&Play Ready to Use) - M. Pairs/Quads/Singles as on low gain theBrand New MINT NOS NIB Rare 1960 BRIMAR CV4033 Black Plate with Copper Grid Post Military tubes. Factory tested and serialized*. CV4033 Flying Lead is a Premium Grade, High Reliability Long Life version of CV4024 ECC81 12AT7 valves (Click Here). CV4033 premium grade version of the 1960s Black Plate CV4024 6060 is one of the best from Brimar in the ECC81 types. STC Rochester Plant Date Codes. Made in England. *each tube came with 3 factory stickers