5687 | 6900 | 7119 | 7044 | E182CC | CV2578

The 5687 is a great little tube and there are so many equivalents and substitutes you'll never run out of tubes to try with this series! 

Compatible equivalents & substitutes: 5687, 5687WA, 5687WB, 5687WC, 6900, 7119, 7044, E182CC, CV2578.