6146
6146 has no equivalent designation confirmed by the archive. Completed sales put the typical price at $23.36 per tube.
Construction and Service
The 6146 is a vacuum tube intended for operation in class AB1 or class AB2 service. In class AB1 operation, the driver stage must supply the No.1 grids with the specified driving voltage at low distortion. In class AB2 operation, the driver stage must supply the specified driving power at low distortion to the No.1 grids.
Grid Circuit Requirements
When the 6146 is operated at maximum ratings, the total dc grid-No.1-circuit resistance should not exceed 30000 ohms. For operation at less than maximum ratings, the dc grid-No.1-circuit resistance may be as high as 100000 ohms. Transformer or impedance coupling devices are recommended for the input coupling network.
Modulation Ratings
Key-down conditions per tube are without amplitude modulation. Amplitude modulation essentially negative may be used if the positive peak of the audio-frequency envelope does not exceed 115 per cent of the carrier conditions.
| Measure | Per tube |
|---|---|
| Median | $23.36 |
| Typical range (25th–75th) | $14.50 – $29.00 |
| Most sales (10th–90th) | $11.16 – $35.70 |
| Extremes incl. outliers | $8.46 – $44.98 |
| Completed sales | 40 |
| Brand | Median | Range | Sales |
|---|---|---|---|
| RCA | $21.99 | $12.68 – $28.00 | 15 |
| GE | $27.81 | $14.50 – $34.37 | 11 |
| Condition | Median | Sales |
|---|---|---|
| NOS | $27.90 | 12 |
| used | $21.07 | 22 |
Per-tube prices from completed sales, 2026-02-22 to 2026-09-18. Matched pairs and quads are divided out. See the price index for how these move over time.
Original manufacturer datasheets for 6146, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| RCA (HB3) | 6146 | PDF (1384 KB) |
Documents held here and used to write this page.
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3 further designations appear alongside 6146 in the literature but below the evidence threshold used here, so they are not listed as equivalent.