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2491 |
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| A range of high quality valves primarily for use in high fidelity and other audio applications. A booklet containing comprehensive data and typical circuits is also available. |
| All these types feature identical pin numbering and have their heaters configured for either 6· 3V or 12· 6V operation. |
| A miniature 9-pin (B9A), low-╡, high current double triode with separate cathodes. It is primarily intended for use as an amplifier or oscillator, and can be employed in both RC coupled voltage amplifier and cathode follower (buffer) configurations, or as a phase splitter. Useful in audio applications requiring low microphony. |
| Characteristics (each section) |
| A miniature 9-pin (B9A), high-╡, low current double triode primarily intended for RC coupled, small signal voltage amplifiers. Its low anode current and controlled low noise, hum and microphony characteristics, together with its high gain, make it ideal for high quality, small signal preamplifier applications. It is equally at home as a higher level voltage amplifier, phase splitter or cathode follower. Especially suitable for Hi-Fi applications. |
| Characteristics (each section) |
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