12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033 A2900 13D91. BEL ECC81... ... 55. Mullard... 56. Mullard... 57. Mullard... 58. Mullard... 59. Mullard... 60. Mullard... 61. Mullard... ... 158. Valvo ECC81... |
12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033 A2900 13D91. BEL ECC81... ... 55. Mullard... 56. Mullard... 57. Mullard... 58. Mullard... 59. Mullard... 60. Mullard... 61. Mullard... ... 158. Valvo ECC81... |
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