Halldorson BA-811 P.P. Interstage Transformer Vacuum Sealed Vintage Audio
USD 129.00 USD
Specifications
| Brand | Halldorson |
| Model | BA-811 |
| Country Of Origin | United States |
These were commonly used to couple push-pull output tube plates to push-pull driver grids in higher-quality audio and PA designs. To push-pull grids (27, 45, 2A5, etc.). Original box shows heavy shelf wear, tearing, and scuffing (see photos).
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