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Tube Interchangability Reference

The following should be direct substitutions. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Tubes in the "Tube" column are directly replaceable with tubes in the "Replacement" column. The reverse will not necessarily be a correct replacement. Please report any errors.

Tube prefix selection

0 1 2 3 4 5 6 7 8 9 10 12 13-117 VT Numeric Letter

Tube	Replacement	Tube	Replacement
27 32 34 35 37 39 39/44 44 51 56 76 77 78 80 81 83 84 182B 183B 408A 482B 483 684 807 866 879 884 951 CK1005 CK1013 1201 1203 1204 1206 1221 1223 1229 1230 1231 1232 1267 1273 1274 1275 1280 1284 1291 1294 1299 1612 1614 1620 1621 1622 1634 1642 1644 1852 1853 2050 2051 2523 5517 5590 5591 5608-A 5654 5670 5691 5672 5678 5691 5692 5693 5725 5726 5727 5731 5749 5750 5751 5814 5824 5881	56 1A4 1A4P 1A4T 1B4 1B4P 1B4T 34 951 1A4 1A4P 1A4T 1B4 1B4P 1B4T 34 951 51 76 39/44 44 39 44 39 39/44 35 27 37 6C6 6D6 5X3 13 83V 88 16 16B 5Z3, 80 6Z4 482B 483 6028 182B 183B 2Z2 5933 866A 2X2A 6Q5 1B4P 0Y4 0Z4A 5517 7E5 7C4 7AB7 768 6C6 6J7 1A4 30 7V7 7G7 0A4 7A7 6X5 5X3 80 83 14H7 12B7 3B7 1R4 3D6 6L7 6L6 6J7 6F6 6L6 12SC7 2C21 12L8 6AC7 6134 6AB7 2051 2050 128A CK1003 5591 9001 9003 5590 53 6AJ5 6AK5 EF95 2C51 6SL7 5678 5672 6SN7 5692 5691 6SN7 ECC33 6SJ7 6AJ5 6AK5 6AS6 6AL5 6663 EB91 EAA91 2D21 EN91 955 6BA6 6660 EF93 PM04 6BE6 EK90 HM04 12AX7 6681 ECC83 12DT7 7025 12AU7 6189 6680 ECC82 25A6 25B6 25C6 25L6 6L6GC 7581 7581A 5932 EL37	5910 5915 5930 5931 5932 5933 5965 6005 6028 6072 6073 6074 6080 6087 6098 6106 6134 6135 6136 6137 6186 6188 6189 6201 6202 6265 6267 6281 6626 6627 6660 6661 6662 6663 6669 6676 6677 6678 6679 6680 6681 6688 6829 6922 7025 7036 7077 7196 7247 7408 7543 7581 8016	1U4 6BE6 6BY6 7036 2A3 5U4 6L6 5881 EL37 807 12AV7 6829 6AQ5 6669 EL90 N727 408A 12AY7 0A2 150C2 6676 6626 0B2 108C1 6627 6AS7 5Y3 6106 6AR6 5Y3 6078 6AC7 1852 6C4 EC90 6AU6 EF94 6SK7 6AG5 6SU7 12AU7 ECC82 6680 5814 12AT7 6679 ECC81 B152 B309 6X4 EZ90 U78 V2M70 6BH6 6661 EL84 6BQ5 CK574 0A2 150C2 6073 6676 0B2 108C2 6074 6BA6 5749 EF93 PM04 6BH6 6265 6BJ6 6AL5 5726 EB91 EAA91 6AQ5 6005 EL90 N727 0A2 150C2 6073 6626 6CL6 6U8 ECF82 12AT7 ECC81 6201 b152 B309 12AU7 6189 5814 ECC82 12AX7 5751 12DT7 7025 ECC83 E180F 5965 12AV7 E88CC 7025A 5751 6681 12AX7 12AX7A 12DF7 12DT7 ECC83 6BY6 5915 6BY4 2C22 12DW7 6V6 6AU6 6AU6A 7581A 6L6GC 1B3

Last update: 23 Mar. 2008