Mullard ECC81 / 12AT7 / M8162 Mullard ECC81 / 12AT7 / CV4024 Mullard ECC82 / 12AU7 / CV4003 Mullard ECC81 / 12AT7 / 6201 "GOLD PIN" Mullard ECC82 / 12AU7 / M8136 Shield & BVA