1. 12ax7


Mullard 10M Master Series 7025

Telefunken ECC803S

Mullard M8137

Mullard long black plate CV492

Amperex ECC83 long plate D getter





2.12au7



Lorenz welded plate circle getter 12AU7 (even with sub-standard readings!)

Gold Monarch B749

Mullard 10M gold pins 12AU7

Telefunken ECC802S factory certified version

Cossor wrinkle glass long welded plate square getter double support

Siemens chrome plater double getter support ECC82

Marconi toast plate square getter wrinkle glass B329 (Mullard made)




3.12at7


Marconi black plates square getter with no getter support

GEC B309 rusty black plates square getter

GEC A2900 rusty plates tripble mica

Mullard ECC81/CV455 grey plates square getter

Brimar 12AT7

RCA tripple mica 12at7 black plates square getter





4.6sn7



Sweden made 33S30

Osram B65

Telefunken B6

Mullard ECC32

Mullard ECC33

CBS 6SN7




5.6dj8



Telefunken E188CC - Best Transience

GEC CV2492 - Best Dynamics

Siemens CCa(old type) - Best Resolution





6.gz34



Mullard GZ34 metal base

Mullard GZ34 big brown base

Mullard GZ32

Amperex BB GZ34 (metal base)

Mullard GZ34 big black base

Mullard GZ34 (small black base)