Dintr-un review:
One reason audiophiles (and musicians) like
valve amplifiers is that they overload very
gracefully… so gracefully that it’s difficult to
perceive they’re overloaded at all. Whereas
solid-state amplifiers go straight into hard
clipping at which point they suddenly
generate (literally) hundreds of high-level
odd- and even-order harmonic distortion
components, valve amplifiers clip ‘softly’
and, when they do, generate only a few,
low-order harmonic distortion components,
many of which sound so pleasant to the ear
(being predominantly low-order and evenorder
harmonics) that it’s difficult (perhaps
impossible) to hear they’re overloading at
all. This ‘soft clipping’ effect also makes it
difficult to measure the exact output power
of valve amplifiers, because soft clipping
is also difficult to observe visually on an
oscilloscope screen, whereas hard clipping
is instantly visible.
Recent Comments