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| Part Number | 1650RA |
| Datasheet | 1650RA datasheet |
| Description | AUDIOPHILE TUBE OUTPUT TRANSFRMR |
| Manufacturer | Hammond Manufacturing |
| Series | A |
| Part Status | Active |
| Turns Ratio - Primary:Secondary | - |
| Impedance - Primary (Ohms) | 5kCT |
| Impedance - Secondary (Ohms) | 4, 8, 16 |
| DC Resistance (DCR) - Primary | 47.43 Ohm, 54.65 Ohm |
| DC Resistance (DCR) - Secondary | 232 mOhm, 333 mOhm, 343 mOhm |
| Transformer Type | Push-Pull Audiophile, Ultra-Linear - Tube Output |
| Frequency Range | 30Hz ~ 30kHz |
| Frequency Response | ±1dB |
| Voltage - Isolation | 3535VDC @ 1 Second |
| Insertion Loss | - |
| Return Loss | - |
| Power Level | 100W |
| Operating Temperature | - |
| Approvals | - |
| Mounting Type | Chassis Mount |
| Size / Dimension | 4.250" L x 3.750" W (107.95mm x 95.25mm) |
| Height - Seated (Max) | 4.560" (115.82mm) |
| Termination Style | Wire Leads |