How is a Keyboard Amp different from Amps for other instruments?

There are good reasons why a common amplifier is not used for all musical instruments.

Musical instruments have their own qualities and an Amplifier should take that into consideration while amplifying.

So if you were thinking of using a guitar amp or a bass amp for your digital piano-keyboard, just because it is available or if you are getting it cheap, think twice.

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Here are some of the unique aspects of different instrument amplifiers, compared to a Keyboard Amp.

Guitar Amps

Another important task for a guitar amp is to reduce the extreme high frequencies (on the treble side) and to reduce the boom (on the bass side).

So these amplifiers have a sharp treble cut-off at around 5 kHz and a bass roll-off at around 60–100 Hz.

For Hard rock and Heavy Metal

For this style of music, you need an aggressive intensity to the guitar sound at higher frequencies, and that too with distortion effects. So, on these amps you will find distortion effects, pre-amp boost controls, and tone filters.

Can you use Guitar Amp for Keyboard?

Guitar amps, on the other hand, are designed to cut bass response, boost the midrange, and on the high frequency side don't go much beyond 10kHz.

So if you use a guitar amp for your digital keyboard, your digital keyboard sound will be squeezed into the guitar's frequency range, which is much smaller than a keyboard’s sonic range.

The result will be less clarity and lower volumes.

Bass Amplifiers

A Bass amplifier has extended bass response and tone controls, which is optimised for bass instruments that produce pitches as low as 40 Hz.

The more expensive, high-end bass amplifiers usually include compressor or limiter feature, which is included to eliminate distortion at volumes near maximum.

Acoustic Amplifiers

Like a keyboard amp, these are designed to deliver relatively flat frequency response, without introducing any additional tonal coloration.

What you need is a clean sound here, so the amplifiers have to be powerful to prevent unwanted distortion.

Keyboard Amp

A keyboard amplifier can be used with a range of digital, electric and electronic keyboard instruments, such as synthesizers, Hammond organ-style keyboards, digital stage pianos and electric/digital pianos.

These amplifiers have very low distortion and give extended, flat frequency response for both, bass and treble clef notes.

Note: If you need a keyboard amp for Hammond organ, you may need to go in for one that is specifically made for Hammond organ, since these amps will need to add a warm, roaring overdrive to the organ sound.

For certain genres of music, such as progressive rock, keyboardists love to perform with several synthesizers, electric pianos, and electro-mechanical keyboards.

For such reason, certain keyboard amplifiers come with a simple onboard mixer with multiple inputs, so that keyboardist players can control the tone and level of several digital piano-keyboards using this keyboard amp.

Various Keyboard Amp Brands / Models

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