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Markbass Nano Mark 300 – frequency response

The Markbass Nano Mark 300 is a compact bass amplifier. It has quite neutral sound reproduction with no apparent character / voicing and that is why I choose this amplifier specifically for double bass. With the EQ knobs in their default position its frequency response is flat. The plot below shows how the response changes when the EQ knobs are moved.

Frequency response

Nano Mark 300 frequency response with the EQ flat and with six other EQ settings
Frequency response with the EQ in the default position (red) and with six other EQ settings.

The first curve is the reference; the others show one or two EQ knobs moved away from the default. Note the label for blue curve is wrong in the plot.

SettingColour
flatred
Bass +2blue
High +2green
HiMid +2black
LoMid −2light purple
LoMid −3purple
LoMid −3, HiMid +3yellow

I find the selection of EQ fixed frequencies suitable for double bass, where you often need to tame 400Hz band and boost the 700 Hz band.