Tung-Sol 12BH7A NOS Single – Premium Driver Tube
NOS Single Tube
New In White Box
Grey Plate
Halo Getter
New In White Box
Grey Plate
Halo Getter
Offering a high-performance New Old Stock (NOS) 1 Pc Tung-Sol 12BH7A medium-mu dual triode, Serial No. 5289001. This American-designed classic features Grey Plates and a Top Halo Getter. The 12BH7A is a robust driver tube frequently utilized in high-end audio amplifiers and vintage McIntosh gear for its excellent linearity and power handling. This unit is supplied in a New White Box and has been precision characterized on the Amplitrex AT1000.
- Type: 12BH7A Brand: Tung-Sol
- Condition: NOS in White Box Construction: Grey Plate / Halo Getter
- Origin: USA Design Testing: Amplitrex AT1000
Laboratory Characterization: Tested against factory reference parameters for 12BH7A (Ip=11.5, Gm=3100). This specimen demonstrates balanced performance with transconductance (Gm) reaching up to 2900 uMhos.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mA) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 5289001 | T1 | 11.5 | 8.6 | 75% | 3100 | 2700 | 87% |
| T2 | 11.5 | 10.0 | 87% | 3100 | 2900 | 94% |
✉️ For technical inquiries, please Email us at [email protected]
Whatsapp: +1 (630) 597-3966
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