Main Characteristics of Electronic
Tube Audio Power Amplifier
It is one hundred years since the electronic tube power
amplifier was invented by D. Forest in 1906. Its mild,
soft and graceful timbre is popular among overseas and
domestic audio fans. Its main characteristics are as
1. Electronic tube audio amplifier is rich in even harmonic.
Its timbre is graceful, fruity, mild and vivid. Since
listener will not have sense of tiredness after listening
long time, it becomes the best choice to release tiredness.
2. Electronic tube is voltage control device. It has
high input resistance, good linear and strong ability
of micro signal reproduction.
3. Electronic tube audio amplifier has good open loop
index, no inter-modulation distortion and good thermal
4. Electronic tube audio amplifier has output transformer,
which plays a role in isolating direct current and preventing
loud speaker from damage.
5. Electronic tube audio amplifiers of same brand can
change different types of electronic tubes from different
manufacturers. Fans are fond of enjoying different timbre.
6. Output transformer resistance of electronic tube
audio amplifier matches resistance of loudspeaker. There
is big reserve power, no digital noise and good transience.
7. Electronic tubes are in various shapes and filament
brightness. Amplifier is elaborately designed and manufactured
to match them, so it has both aesthetical and function
8. Lines of electronic tube audio amplifier are simple
and easy for maintenance. It can be used for long and
is absolutely over value.
9. The development of science and technology result
in enhancement of material and craft of electronic tube,
high quality of electronic components and high index
of output transformer, which have fully made up for
the shortcomings of insufficient low frequency strength
and slow speed of electronic tube audio amplifier.
10. The application of single-chip control circuit on
electronic tube audio amplifier enables the amplifier
more personal, scientific and rational. Electronic tube
audio amplifier will surely become a new consuming focus.