Tripple matching Sylvania SX-201A's kick ass tubes tested, fully functional.

Tested on Sencore TC -142 Mighty Mite V ~ no shorts ⚡ no grid leakage 💧 and the heaters 🔥 are good 👍 to go ~ Emission test out strong 💪

Preferred Substitutes ................ CX301A, UX201A, X-201A, TC201A, AX201A, D401A, ER201A, ER201, UX-201-A_Japan, 201, 201A, ER201A, FX201A, BX-201A, C-201A, OK-X201A, A_CeCo, AX+, G201A, CF501, 6505_Defender, GSX401A, EX-1A, DX201A, CTX201A, 401A_UX, GSX-201A, 301A, 57T201A, JX201A, M-201-A, A-201, LB-201A, LS201A, MX201A, D201A, NX-201A, D-201A, EX201A, a_MusicMaster, S01A.