| 6L6GC E.H. Matched pair | 6L6GC E.H. Matched Quad$0.00 | 5881WXT Quad Set Sovtek |
5881WXT Matched Pair $103.10 | 6C4WA JAN Philips$14.95 | 6550C Svetlana Quad set |
| 6922 EH$36.50 | 6550C Svetlana Matched Pair | 6550 Svetlana Sextet not available in sextets $0.00 |
| 6550 EH Quad set | 6550 EH Matched Pair | 6267/EF86 N.O.S. |