page_title: Single-ended triode
hierarchical_section_title: Single-ended triode
caption_attribution_description: Audion Sterling ETSE (Extended Triode Single Ended Stereo) tube amplifier.
context_page_description: A single-ended triode is a vacuum tube electronic amplifier that uses a single triode to produce an output, in contrast to a push-pull amplifier which uses a pair of devices with antiphase inputs to generate an output with the wanted signals added and the distortion components subtracted. Single-ended amplifiers normally operate in Class A; push-pull amplifiers can also operate in Classes AB or B without excessive net distortion, due to cancellation.
  The term single-ended triode amplifier is mainly used for output stages of audio power amplifiers.
  The phrase directly heated triode single-ended triode amplifier is used when directly heated triodes are used.
  There are also single-ended tetrode, beam tetrode/beam power tube/kinkless tetrode, and pentode amplifiers with the same functionality and similar circuitry; e.g. this Mullard design.
context_section_description: A single-ended triode (SET) is a vacuum tube electronic amplifier that uses a single triode to produce an output, in contrast to a push-pull amplifier which uses a pair of devices with antiphase inputs to generate an output with the wanted signals added and the distortion components subtracted. Single-ended amplifiers normally operate in Class A; push-pull amplifiers can also operate in Classes AB or B without excessive net distortion, due to cancellation.
  The term single-ended triode amplifier is mainly used for output stages of audio power amplifiers.
  The phrase directly heated triode single-ended triode amplifier (abbreviated to DHT SET) is used when directly heated triodes are used.
  There are also single-ended tetrode, beam tetrode/beam power tube/kinkless tetrode, and pentode amplifiers with the same functionality and similar circuitry; e.g.  this Mullard design.
caption: A SET tube audio amplifier.
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