Brimar CV4003 / 12AU7 NOS Matched Pair
NOS Matched Pair
New In Original Box
Military Grade
Box Anode
New In Original Box
Military Grade
Box Anode
Available for purchase is a tightly matched pair of 2 pcs Brimar CV4003 dual triodes, the high-reliability military version of the 12AU7 / ECC82. These premium British Made valves feature the robust box anode construction. Both units are in New Old Stock (NOS) condition, housed in original Brimar boxes, and verified on an Amplitrex AT1000 tester.
- Type: CV4003 / 12AU7 Brand: Brimar
- Condition: NOS in Original Boxes Construction: Box Anode
- Origin: Made in England Testing: Amplitrex AT1000
High Performance Screening: Tested against factory parameters for the 12AU7 / CV4003 family.
Precision Characterization: Both tubes exhibit exceptional balance across all four triode sections for plate current and transconductance.
Precision Characterization: Both tubes exhibit exceptional balance across all four triode sections for plate current and transconductance.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Triode | Parameter Ip (mA) | Result Ip (mA) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 807570 | T1 | 10.5 | 11.0 | 105% | 2200 | 2200 | 100% |
| T2 | 10.5 | 10.8 | 103% | 2200 | 2200 | 100% | |
| 807797 | T1 | 10.5 | 11.2 | 107% | 2200 | 2200 | 100% |
| T2 | 10.5 | 10.8 | 103% | 2200 | 2200 | 100% |
Additional Specs: Tube 807570 Mu: 15.6/15.6 | Tube 807797 Mu: 15.6/15.6.
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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