| 1958 | MD 439 - Distance ECC88, 6U8, EF80, EF80, EF80, EF80, EF80, EF80, EL84, EL84, EL84, EBC81, EBC81, 12AT7, 12AT7, 6DQ6, 6AL5, EY82, EY82, EY86 |
 | 1958 | ML 439 - Distance ECC88, 6U8, EF80, EF80, EF80, EF80, EF80, EF80, EL84, EL84, EL84, EBC81, EBC81, 12AT7, 12AT7, 6DQ6, 6AL5, EY82, EY82, EY86 |