5814 tubes are an industrial version of the 12AU7 and can be used in place of any 12AU7.
| Order no. | Tube type and description | Price each |
| 581.001 | RCA 5814 black plate | $20.00 |
| 581.002 | RCA 5814 grey plate | $15.00 |
| 581.003 | Raytheon 5814 | $15.00 |
| 581.004 | Tung-Sol 5814 | $20.00 |
| 581.005 | CBS/Hytron 5814 | $20.00 |
| 581.006 | G.E. 5814 | $14.00 |
| 581.007 | United Electron 5814 | $14.00 |
| 581.008 | Sylvania 5814 JAN Sylvania and Phillips tubes | $15.00 |
| 581.009 | Sylvania 5814 Sylvania gold brand tubes | $20.00 |
| 581.010 | Westinghouse 5814 | $15.00 |