12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033 A2900 13D91. BEL ECC81... ... 133. Tung-Sol... 134. Tung-Sol... 135. Tung-Sol... 136. Tung-Sol... 137. Tung-Sol... 138. Valvo ... 139. Valvo ... ... 158. Valvo ECC81... |
12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033 A2900 13D91. BEL ECC81... ... 133. Tung-Sol... 134. Tung-Sol... 135. Tung-Sol... 136. Tung-Sol... 137. Tung-Sol... 138. Valvo ... 139. Valvo ... ... 158. Valvo ECC81... |
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