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| TYPE | DESCRIPTION |
| Mfr | Hammond Manufacturing |
| Series | A |
| Package | Box |
| Product Status | Active |
| Turns Ratio - Primary:Secondary | - |
| Impedance - Primary (Ohms) | 6.6kCT |
| Impedance - Secondary (Ohms) | 4, 8, 16 |
| DC Resistance (DCR) - Primary | 71.34Ohm, 80.42Ohm |
| DC Resistance (DCR) - Secondary | 237mOhm, 364mOhm, 473mOhm |
| Transformer Type | Push-Pull Audiophile, Ultra-Linear - Tube Output |
| Frequency Range | 30Hz ~ 30kHz |
| Frequency Response | ±1dB |
| Voltage - Isolation | 2000V @ 1 Second |
| Insertion Loss | - |
| Return Loss | - |
| Power Level | 60W |
| Operating Temperature | - |
| Approval Agency | - |
| Mounting Type | Chassis Mount |
| Size / Dimension | 4.250" L x 3.130" W (107.95mm x 79.50mm) |
| Height - Seated (Max) | 3.810" (96.77mm) |
| Termination Style | Wire Leads |
| Weight | 8 lbs (3.6 kg) |
| Base Product Number | 1650 |