Hi Fi and amp transformers
Author: Kevin M Date Posted:3 November 2017
Below is a short table of the key factors used when choosing a transformer, for detailed information on size and mounting dimensions please visit here and search for the model you are interested in,
3 types of transformers listed on the page.
1. High Voltage Plate and Filament
High Voltage & Filament Transformers
Technical Specifications & Secondary Output Reference Guide
Below is a short table of the key factors used when choosing a transformer. For detailed information on size and mounting dimensions, please visit Hammond Manufacturing → and search for the specific model number you are interested in.
Transformer Types Included in Directory:
- High Voltage Plate and Filament
- Potted High Voltage Plate and Filament
- High Voltage Plate
Please Note: Whilst not all transformers listed below are currently stocked on our website ready for immediate purchase, we can special order any listed Hammond transformer simply by emailing your request to info@evatco.com.au.
| Part No. | VA | A.C. High Voltage Secondary R.M.S. | BIAS Tap High Voltage (C.T. Grounded) | Filament #1 | Filament #2 | Filament #3 | Filament #4 |
|---|---|---|---|---|---|---|---|
| 363AX | 32 | 200V C.T. @ 115mA | 50 | 5V C.T. @ 2A | - | - | - |
| 369AX | 40 | 250V C.T. @ 115mA | 50 | 6.3V C.T. @ 2A | - | - | - |
| 369BX | 39 | 300V C.T. @ 86mA | 50 | 6.3V C.T. @ 2A | - | - | - |
| 363CX | 119 | 360V C.T. @ 288mA | 50 | 5V C.T. @ 3A | - | - | - |
| 369EX | 45 | 380V C.T. @ 75mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369HX | 120 | 450V C.T. @ 150mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 369KX | 188 | 450V C.T. @ 300mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370X | 41 | 480V C.T. @ 46mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 1.5A | - | - |
| 370AX | 44 | 480V C.T. @ 58mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369GX | 50 | 450V C.T. @ 75mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369JX | 50 | 500V C.T. @ 69mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 370CAX | 66 | 500V C.T. @ 81mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.5A | - | - |
| 370JX | 133 | 500V C.T. @ 161mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370KX | 229 | 500V C.T. @ 322mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 6A | - | - |
| 370DAX | 76 | 520V C.T. @ 104mA | 50 | 6.3V C.T. @ 3.5A | - | - | - |
| 370BX | 55 | 550V C.T. @ 58mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 370CX | 59 | 550V C.T. @ 75mA | 50 | 6.3V C.T. @ 0.6A | 6.3V C.T. @ 2.5A | - | - |
| 370DX | 86 | 550V C.T. @ 104mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 370EX | 119 | 550V C.T. @ 144mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | - | - |
| 370FX | 141 | 550V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 370HX | 180 | 550V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370LX | 340 | 550V C.T. @ 460mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 370MX | 403 | 550V C.T. @ 575mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 371X | 63 | 560V C.T. @ 69mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 372BX | 98 | 600V C.T. @ 115mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 372DX | 127 | 600V C.T. @ 144mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | - | - |
| 372FX | 150 | 600V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 302AX | 198 | 600V C.T. @ 230mA | 50 | 2.5V C.T. @ 2.5A | 5V C.T. @ 3A | 6.3V C.T. @ 6A | 2.5V C.T. @ 2.5A |
| 372HX | 191 | 600V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 372JX | 243 | 600V C.T. @ 288mA | 50 | 5V C.T. @ 4A | 6.3V C.T. @ 8A | - | - |
| 372KX | 432 | 600V C.T. @ 575mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 372LX | 520 | 600V C.T. @ 690mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 12A | - | - |
| 372X | 75 | 620V C.T. @ 81mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.4A | - | - |
| 376X | 157 | 640V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373EX | 311 | 650V C.T. @ 345mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373FX | 386 | 650V C.T. @ 460mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373DX | 101 | 700V C.T. @ 104mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 373X | 125 | 700V C.T. @ 127mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 4A | - | - |
| 373BX | 187 | 700V C.T. @ 201mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373HX | 369 | 700V C.T. @ 403mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373JX | 710 | 700V C.T. @ 863mA | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 12A | - | - |
| 374AX | 136 | 720V C.T. @ 138mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 3.5A | - | - |
| 374X | 141 | 750V C.T. @ 127mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 374BX | 200 | 750V C.T. @ 201mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 375X | 171 | 800V C.T. @ 155mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 378X | 237 | 800V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 300BX | 280 | 800V C.T. @ 288mA | 50 | 5V C.T. @ 1.2A | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - |
| 378CX | 465 | 800V C.T. @ 534mA | 50 | 6.3V C.T. @ 6A | - | - | - |
| 379WX | 940 | 800V C.T. @ 1.06A or 850V C.T. @ 1A | 60* | 6.3V C.T. @ 12A | - | - | - |
| 379X | 193 | 850V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 382X | 283 | 1,000V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 384X | 329 | 1,200V C.T. @ 230mA | 50 | 5V @ 3A | 6.3V @ 3A | 6.3V @ 3A | - |
| 370DAZ | 76 | 520V C.T. @ 104mA | 50 | 6.3V C.T. @ 3.5A | - | - | - |
| 373AZ | 49 | 650V C.T. @ 46mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 373CZ | 159 | 650V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373DZ | 101 | 700V C.T. @ 104mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 369AXP | 40 | 250V C.T. @ 115mA | 50 | 6.3V C.T. @ 2A | - | - | - |
| 370XP | 41 | 480V C.T. @ 46mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 1.5A | - | - |
| 369GXP | 50 | 450V C.T. @ 74mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369JXP | 50 | 500V C.T. @ 69mA | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 370CAXP | 66 | 500V C.T. @ 81mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.5A | - | - |
| 370DAXP | 76 | 520V C.T. @ 104mA | 50 | 6.3V C.T. @ 3.5A | - | - | - |
| 370DXP | 86 | 550V C.T. @ 104mA | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 370EXP | 119 | 550V C.T. @ 144mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | - | - |
| 370FXP | 141 | 550V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 370HXP | 180 | 550V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 372FXP | 150 | 600V C.T. @ 173mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 372HXP | 191 | 600V C.T. @ 230mA | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
Need help selecting a high-voltage power transformer? Contact us at info@evatco.com.au for custom ordering assistance.
Search Index Terms:
2. Potted High Voltage Plate and Filament
3. High Voltage Plate
Please note: That whilst not all transformers are on our website ready to purchase, we can special order in all transformers listed simply by emailing info@evatco.com.au with our request.​​
| Part No. | VA | A.C High Voltage Secondary R.M.S | BIAS tap on Hig Voltage secondary with C.T grounded (VAC) | Filament #1 (VAC) | Filament #2 (VAC) | Filament #3 (VAC) | Filament #4 (VAC) |
| 363AX | 32 | 200V C.T. @ 115ma. | 50 | 5V C.T. @ 2A | - | - | - |
| 369AX | 40 | 250V C.T. @ 115ma. | 50 | 6.3V C.T. @ 2A | - | - | - |
| 369BX | 39 | 300V C.T. @ 86ma. | 50 | 6.3V C.T. @ 2A | - | - | - |
| 363CX | 119 | 360V C.T. @ 288ma. | 50 | 5V C.T. @ 3A | - | - | - |
| 369EX | 45 | 380V C.T. @ 75ma. | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369HX | 120 | 450V C.T. @ 150ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 369KX | 188 | 450V C.T. @ 300ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370X | 41 | 480V C.T. @ 46ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 1.5A | - | - |
| 370AX | 44 | 480V C.T. @ 58ma. | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369GX | 50 | 450V C.T. @ 75ma. | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 369JX | 50 | 500V C.T. @ 69ma. | 50 | 6.3V C.T. @ 2.5A | - | - | - |
| 370CAX | 66 | 500V C.T. @ 81ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.5A | - | - |
| 370JX | 133 | 500V C.T. @ 161ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370KX | 229 | 500V C.T. @ 322ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 6A | - | - |
| 370DAX | 76 | 520V C.T. @ 104ma. | 50 | 6.3V C.T. @ 3.5A | - | - | - |
| 370BX | 55 | 550V C.T. @ 58ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 370CX | 59 | 550V C.T. @ 75ma. | 50 | 6.3V C.T. @ 0.6A | 6.3V C.T. @ 2.5A | - | - |
| 370DX | 86 | 550V C.T. @ 104ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 370EX | 119 | 550V C.T. @ 144ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | - | - |
| 370FX | 141 | 550V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 370HX | 180 | 550V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 370LX | 340 | 550V C.T. @ 460ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 370MX | 403 | 550V C.T. @ 575ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 371X | 63 | 560V C.T. @ 69ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 372BX | 98 | 600V C.T. @ 115ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 372DX | 127 | 600V C.T. @ 144ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | - | - |
| 372FX | 150 | 600V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 302AX | 198 | 600V C.T. @ 230ma. | 50 | 2.5V C.T. @ 2.5A | 5V C.T. @ 3A | 6.3V C.T. @ 6A | 2.5V C.T. @ 2.5A |
| 372HX | 191 | 600V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 372JX | 243 | 600V C.T. @ 288ma. | 50 | 5V C.T. @ 4A | 6.3V C.T. @ 8A | - | - |
| 372KX | 432 | 600V C.T. @ 575ma | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 372LX | 520 | 600V C.T. @ 690ma | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 12A | - | - |
| 372X | 75 | 620V C.T. @ 81ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.4A | - | - |
| 376X | 157 | 640V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373EX | 311 | 650V C.T. @ 345ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373FX | 386 | 650V C.T. @ 460ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373DX | 101 | 700V C.T. @ 104ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 373X | 125 | 700V C.T. @ 127ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 4A | - | - |
| 373BX | 187 | 700V C.T. @ 201ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373HX | 369 | 700V C.T. @ 403ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 9A | - | - |
| 373JX | 710 | 700V C.T. @ 863ma. | 50 | 5V C.T. @ 6A | 6.3V C.T. @ 12A | - | - |
| 374AX | 136 | 720V C.T. @ 138ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 3.5A | - | - |
| 374X | 141 | 750V C.T. @ 127ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 374BX | 200 | 750V C.T. @ 201ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 375X | 171 | 800V C.T. @ 155ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 378X | 237 | 800V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 300BX | 280 | 800V C.T. @ 288ma. | 50 | 5V C.T. @ 1.2A | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - |
| 378CX | 465 | 800V C.T. @ 534ma. | 50 | 6.3V C.T. @ 6A | - | - | - |
| 379WX | 940 | 800V C.T. @ 1.06 A or 850V C.T. @ 1A | 60* | 6.3V C.T. @12A | - | - | - |
| 379X | 193 | 850V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 382X | 283 | 1,000V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | - | - |
| 384X | 329 | 1,200V C.T. @ 230mA | 50 | 5V @ 3A | 6.3V @ 3A | 6.3V @ 3A | - |
| 370DAZ | 76 | 520V C.T. @ 104ma. | 50 | 6.3V C.T. @ 3.5A | - | - | - |
| 373AZ | 49 | 650V C.T. @ 46ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2A | - | - |
| 373CZ | 159 | 650V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | - | - |
| 373DZ | 101 | 700V C.T. @ 104ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | - | - |
| 369AXP | 40 | 250V C.T. @ 115ma. | 50 | 6.3V C.T. @ 2A | - | ||
| 370XP | 41 | 480V C.T. @ 46ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 1.5A | ||
| 369GXP | 50 | 450V C.T. @ 74ma. | 50 | 6.3V C.T. @ 2.5A | - | ||
| 369JXP | 50 | 500V C.T. @ 69ma. | 50 | 6.3V C.T. @ 2.5A | - | ||
| 370CAXP | 66 | 500V C.T. @ 81ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.5A | ||
| 370DAXP | 76 | 520V C.T. @ 104ma. | 50 | 6.3V C.T. @ 3.5A | - | ||
| 370DXP | 86 | 550V C.T. @ 104ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 3A | ||
| 370EXP | 119 | 550V C.T. @ 144ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 4A | ||
| 370FXP | 141 | 550V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | ||
| 370HXP | 180 | 550V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | ||
| 372FXP | 150 | 600V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | ||
| 372HXP | 191 | 600V C.T. @ 230ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | ||
| 372JXP | 243 | 600V C.T. @ 288ma. | 50 | 5V C.T. @ 4A | 6.3V C.T. @ 8A | ||
| 372XP | 75 | 620V C.T. @ 81ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 2.4A | ||
| 376XP | 157 | 640V C.T. @ 173ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | ||
| 373XP | 125 | 700V C.T. @ 127ma. | 50 | 5V C.T. @ 2A | 6.3V C.T. @ 4A | ||
| 374AXP | 136 | 720V C.T. @ 138ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 3.5A | ||
| 374XP | 141 | 750V C.T. @ 127ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A | ||
| 374BXP | 200 | 750V C.T. @ 201ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 6A | ||
| 375XP | 171 | 800V C.T. @ 155ma. | 50 | 5V C.T. @ 3A | 6.3V C.T. @ 5A |
| Part No. | VA | A.C High Voltage Secondary R.M.S | H.V. Secondary Cureent (CCS) (ICAS) | |
| 710A | 110 | 750V C.T. | 147ma. | 221ma. |
| 712A | 130 | 850V C.T. | 215ma. | 323ma. |
| 714A | 180 | 1,020V C.T. | 170ma. | 255ma. |
| 715A | 200 | 1,020V C.T. | 300ma. | 450ma. |
| 717A | 510 | 1,020V C.T. | 500ma. | 750ma. |
| 718A | 235 | 1,250V C.T. | 200ma. | 300ma. |
| 720A | 370 | 1,250V C.T. | 300ma. | 450ma. |
| 722A | 625 | 1,250V C.T. | 500ma. | 750ma. |
| 724A | 345 | 1,500V C.T. | 226ma. | 339ma. |
| 726A | 312 | 1,780V C.T. | 202ma. | 299ma. |
| 728A | 210 | 2,000V C.T. | 175ma. | 263ma. |
| 732A | 500 | 2,500V C.T. | 200ma. | 300ma. |
| 733A | 750 | 2,500V C.T. | 300ma. | 450ma. |
| 735A | 735 | 3,000V C.T. | 250ma. | 375ma. |
| 737A | 1200 | 3,000V C.T. | 400ma. | 600ma. |
| 739A | 1400 | 3,500V C.T. | 400ma. | 600ma. |
