7A-25Z
12V6, 12K7, 12GT5A, 12DZ6, 12EL6, 12SC7, 12BK5, 12K7GT, 12C5/12CU5, 12SL7GT, 12SN7GTA, 12C8/VT153, 12S7 Tube, 12GB7 Tube, 12EK5 Tube, 12CY8 Tube, 12GB3 Tube, 12HL7 Tube, 12JB6MP-SEL, 12AE7, 12AD6, 12AL8, 12BV7 Tube, , 12J5 Tube, 12j5gt Medium Mu Triode, 12CU5 Tube, 12cu5/12c5 Beam Power Amplifier, 12AH8 Tube, 12AC5 Tube, 12GN7A/12HG7 Tube, 12gn7/ 12hg7 Sharp Cut Off Pentode, 12DW7 Tube, 12dw7/7247 Double Triode
