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| PartNumber | 1650T | 1650TA | 1650T-MODIFIED |
| Description | Audio & Signal Transformers Transformers Audio & Signal 120W 1.9K ct/ 4-8-16 Push-Pull Tube Type | Audio & Signal Transformers Transformers Audio & Signal PUSHPULL 120W 1900CT | 1650T-MODIFIED |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | - |
| Product Category | Audio Transformers | Audio Transformers | - |
| Series | 1600 | A | - |
| Product | Audio | Audio | - |
| Unit Weight | 10.400 lbs | 10.400 lbs | - |
| Termination Style | Wire Leads | Wire Leads | - |
| Height | 4.56 in | 4.56 in | - |
| Length | 3.75 in | 4.5 in | - |
| Width | 4.5 in | 3.75 in | - |
| Impedance | 1.9kCT Primary, 4/8/16 Secondary | 1.9kCT Primary, 4/8/16 Secondary | - |
| Mounting Type | Chassis Mount | Chassis Mount | - |
| Frequency Range | 30 Hz to 30 kHz | 30 Hz to 30 kHz | - |
| Size Dimension | 114.30mm L x 95.25mm W | 114.30mm L x 95.25mm W | - |
| Current | - | 403mA | - |
| Height Seated Max | 115.82mm | 115.82mm | - |
| Shielding | Shielded | Shielded | - |
| Insertion Loss | ±1dB | ±1dB | - |
| Transformer Type | Push-Pull Audiophile, Ultra-Linear - Tube Output | Push-Pull Audiophile, Ultra-Linear - Tube Output | - |
| Product Type | Push-Pull Tube | - | - |
| Power Rating | 120 W | 120 W | - |
| Application | Tube Output Push Pull | Tube Output Push Pull | - |
| Package Case | 3.75 in x 4.5 in x 4.56 in | 4.5 in x 3.75 in x 4.56 in | - |
| Maximum DC Current | 403 mA | 403 mA | - |
| Primary Impedance | 1900 Ohms CT | 1900 Ohms CT | - |
| Secondary Impedance | 4 Ohms 8 Ohms 16 Ohms | 16 Ohms | - |
| Packaging | - | Bulk | - |
| Current Rating | - | 403 mA | - |