| Country | United States of America (USA) |
|---|---|
| Manufacturer | Federated Purchaser, Inc. (Acratone, Acratest); New York City (NY) |
| Model | Model Acratest 108 - Federated Purchaser, Inc. |
| Year: 1934 | Category: Audio Amplifier |
| Valves | 5: 57 57 2B6 2B6 83 |
| Technology | Audio-Amplification; 2 AF stage(s) |
| Power type | AC |
| Type | Configuration | Year | Base | Equivalents |
|---|---|---|---|---|
| 57 | Pentode | 1932 | UX6 | CV612 BT5 |
| 57 | Pentode | 1932 | UX6 | CV612 BT5 |
| 83 | FW Rectifier | 1932 | UX4 | CV618 |