P-505B
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Function | Accessory |
| Produced | 1949 |
| Country | United States |
| Signal Path | Analog Hardware |
| Dimensions | 25.7 × 6.9 × 0 cm (W × H × D) |
| Weight | 3.5lbs |
| Power | 105/117/130VAC |
| Output Voltage | 380VDC |
| Output Current | 40mA |
| Tube Complement | 6X5 |
| Finish | Blue-Gray |
| MSRP (1949) | $48 |