Beckman 5963 — Premium Matched Pair
Long Grey Plate
Top Ring Getter
Clear Glass
Industrial Grade
Top Ring Getter
Clear Glass
Industrial Grade
The Beckman 5963 is a high-performance industrial variant of the 12AU7/ECC82. These vintage black-plate tubes are renowned for their rugged construction and exceptional sonic clarity, carefully matched for critical audio balance.
- Type: 5963
- Brand: Beckman
- Printing : Yellow Ink
- Construction: Long Grey Plate
- Getter: Top Ring
- Testing: Amplitrex AT1000
Premium Quality: Rare industrial Beckman labeling with rugged internal supports.
Sonic Signature: Fast, detailed, and clean with the characteristic “Black Plate” depth.
Equivalents: 12AU7, ECC82, 5814, 6189.
Matching Grade: Precision balanced stereo pair with strong Gm tracking.
⚠️ Custom duties & taxes are the buyer’s responsibility.
| Sr. No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | Results in Percentage Ip mAdc | Parameter Gm | Result Gm (uMhos) | Results in Percentage Gm(uMhos) |
|---|---|---|---|---|---|---|---|
| 4773001 | T1 | 10.5 | 9.2 | 87.6% | 2200 | 2400 | 109.1% |
| T2 | 10.5 | 9.0 | 85.7% | 2200 | 2400 | 109.1% | |
| 4773002 | T1 | 10.5 | 10.6 | 101.0% | 2200 | 2580 | 117.3% |
| T2 | 10.5 | 9.2 | 87.6% | 2200 | 2300 | 104.5% |
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