Type of amplification often, (but not always), using vacuum tubes Typically low power output, low damping factor and relatively high distortion Single-ended enthusiasts claim that the sound quality is more "real"
An amplifier topology in which a single output device [tube or transistor] amplifies both the signals positive and negative phase and hence doesnt require a phase splitter A variation on this topology is called "parallel single-ended" that parallels multiple output devices for increased output power By definition, single-ended amplifiers always run in Class A
An unbalanced circuit or transmission line, such as a coaxial cable transmission line (see also Balanced Line)
The condition where the low terminal of a two-terminal meter is connected to a specific reference point, such as power line common, earth ground, or circuit common