Valve Amplifiers versus Solid State Amps
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Guitar amplifiers which utilise valves have been around for over 50 years and are still as popular today as ever. Many musicians
feel that the valves bring warmth to the sound of the instrument, mainly due to the relaxed top end frequencies and soft bass,
but with an excellent degree of mid-range tones.
Solid state amplification was introduced in the 1970s and became popular due to it's clarity of sound reproduction. Here we will
look at and compare both technologies to see the relative advantages of each.
Valve Amplifiers
Known as a vlave audio amplifier here in the UK or a vacuum tube audio amplifier in the US, this type of amp is used for sound
recording, reproduction and reinforcement.
While solid-state devices prevail in most audio amplifiers today, valve audio amplifiers are still used extensively in the music
business where their audible characteristics are considered preferential.
Valve amps have the following technical advantages over their solid-state counterparts:
- In comparison to semiconductors, they have a low drift across a wide range of operationg condtions.
- Failed tubes are easily replacable, whereas solid state amplifers entail a much more complicated process.
The Solid-state Amplifier
Valve amps have various disadvantages in comparison to the solid state amplifier:
- They are typically bulky and heavy units requiring power transformers, although they are generally direct-coupled and don't
require output transformers
- The tube performance will worsen over time, eventutally resulting in complete failure. If maintained appropriately,
performance is excellent and will have a decent lifespan.
- They require a warm-up period (of a few minutes or so with modern amplifiers) to produce optimal tone.
Modeling amps simulate the classic sound emittedfrom the most well known amplifier and effects, by using digital processing,
although analogue units are also available.
This technology offers a wide range of palying tones and effects, as well as cabinet simualtion so it can be recoreded without
the need for a microphone. However, modelling amps are deemed inferior by many in comparison to more traditional amplifiers as
the digital simualtion doesn’t really capture the guitar amp tone.
Whichever amplifier you choose, be sure to try it with your own guitar and any onstage effects that you may use on a regular
basis.