I’m using this in my Grannyring modified Orchid. Much clearer? More airy? Than the NOS Mullard mentions in this thread. In my system, my ears of course.
E188CC / 7308 Siemens, West Germany made, 1960s wide getter support post, gold pins.
E188CC / 7308 Siemens, West Germany made, 1960s wide getter support post, gold pins.