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Transformer - One Electron, Output, 1600 Ω to 16/8/4 Ω
The UBT-1 from One Electron is a low-impedance single-ended output transformer intended for parallel combinations of tubes running a B+ voltages of 250 to 325 volts, such as: two or three EL34s (triode connected), three 2A3s, two 300Bs, two 6AS7s, etc., as well as single sweep tubes run in 'enhanced-triode' mode, resulting in 10 to 15 watts of output power. It features a paper bobbin. The UBT-1s low impedance gives an exceptionally broad frequency range of 10Hz to over 75 KHz (at 1 watt). This transformer has been the basis for excellent-sounding single-ended amps, and is notable for its clean, detailed sound. 6.1 lbs.
| D.C. Primary Current, maximum | 160 mA | |
| Item Height | 3.375 in. | |
| Item Length | 2.85 in. | |
| Item Width | 4.25 in. | |
| Mounting Hole Center to Center A | 2.25 in. | |
| Mounting Hole Center to Center B | 3 in. | |
| Mounting Hole Diameter | 0.17 in. | |
| Output Power, maximum | 13 W - 18 W | |
| Primary Impedance | 1.6 kΩ | |
| Primary Inductance | 8 H nominal @ 160 mA | |
| Primary Resistance | 165 Ω nominal @ 25°C | |
| Secondary Impedance | 4 Ω / 8 Ω / 16 Ω |
| Packaging Dimensions | 5.75 in. × 4 in. × 3 in. | |
| Weight (Packaging) | 5.656 lbs. |
 Specification Sheet | All Models |
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I d like to make an SET running one Type 45 tube in eachthe channel. Which of your OPTs will make the best in FR?
Asked by Anonymous on April 3rd, 2018.
We are not amp techs and do not know what transformer you need for these tubes.
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