1U4
1U4 has no equivalent designation confirmed by the archive. Completed sales put the typical price at $7.47 per tube.
What 1U4 Sells For
| Measure | Per tube |
|---|---|
| Median | $7.47 |
| Typical range (25th–75th) | $5.60 – $10.15 |
| Most sales (10th–90th) | $4.25 – $12.12 |
| Extremes incl. outliers | $3.87 – $19.33 |
| Completed sales | 26 |
By Brand
| Brand | Median | Range | Sales |
|---|---|---|---|
| Sylvania | $6.95 | $4.25 – $8.99 | 7 |
| GE | $8.95 | $6.95 – $11.97 | 5 |
| RCA | $10.15 | $10.15 – $12.12 | 5 |
| Tung-Sol | $6.97 | $5.95 – $10.73 | 4 |
By Condition
| Condition | Median | Sales |
|---|---|---|
| NOS | $8.97 | 20 |
| used | $4.62 | 6 |
Per-tube prices from completed sales, 2026-07-12 to 2026-09-04. Matched pairs and quads are divided out. See the price index for how these move over time.
Datasheets
Original manufacturer datasheets for 1U4, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| General Electric | 1U4 | PDF (325 KB) |
| Tung-Sol | 1U4 | PDF (103 KB) |
In the Archive
Documents held here and used to write this page.
- **1U4**
1 further designation appears alongside 1U4 in the literature but below the evidence threshold used here, so it is not listed as equivalent.