Electro-Harmonix 12AT7 Preamp Vacuum Tube 12AT7EH

Motorola 12AT7 NOS Vintage Vacuum Tube - Singular

2- Matsushita 12AT7 Japan Vacuum Tube / MULLARD TOOLING - Tested

GE General Electric NOS 6201 12AT7 Vacuum Tube Vintage - Singular

Fender Special Design 12AT7 Vacuum Tube

Electro Harmonix 12AT7 Tube

One IEC MULLARD BRIMAR 12AT7 Tube GM[%]: 89/96 EM[%]: 104/118 AMPLITREX

One Excellent RAYTHEON 12AT7 Tube Grey Plate D Getter GM[%]: 98/92 AMPLITREX