Single
- Various 6X4$10.50
- Sovtek 5V4GT$11.40
- JJ/Tesla 6CA4 / EZ81Out of stock
- Electro-Harmonix 6CA4$13.00
- Electro-Harmonix 5U4GB$14.90
- Various 6X5GT / EZ35$15.00
- Sino 5U4G-CHZ$15.00
- Various 5U4GB / 5AS4A USED$15.00
- RCA 6X5GT / EZ35$16.00
- Sovtek 5Y3$16.50
- JJ/Tesla 5U4GB$17.00
- Sino 5AR4/GZ34-CHZ$18.00
- Cetron 5R4WGB JAN$18.00
- JJ/Tesla 5AR4/GZ34$19.60
- Sovtek 5AR4/GZ34$21.00
- TungSol 5AR4/GZ34$33.00
- Mullard 5AR4/GZ34$39.00
- Various 5U4GB$39.50
- Genalex U77/GZ34 Gold Lion$39.90
- Svetlana 5U4GOut of stock