Carl Martin 3 Band Parametric Preamp

The Carl Martin 3 Band Parametric Preamp is a 3-band semi-parametric EQ with a balanced line driver, built into a stomp box by Carl Martin. Carl Martin says it was specially developed for musicians who play acoustic guitar, violin, accordion, double bass and other acoustic instruments, and that it works equally well for tweaking the sound of electric guitars, basses, other electronic instruments and direct studio recordings¹.

A semi-parametric EQ lets you cut or boost a band and shape where that cut or boost sits, which is what makes the pedal useful for acoustic players fighting a resonant frequency, or for anyone dialing in a direct tone. Carl Martin describes the signal handling as clean and transparent, without distortion or noise, with maximum headroom¹.

What it does

The pedal's built-in regulated (±12V) power supply is what Carl Martin points to as the basis of its design: it enables circuitry with maximum headroom for clean, transparent signal handling without distortion or noise¹. For a player, that means the unit behaves like a preamp and EQ in one box rather than a boost that colors the tone.

Because it carries a balanced line driver, it can feed a mixing desk or interface directly, which suits its stated use for direct studio recordings and for acoustic instruments on stage¹.

Doug Wimbish is listed on Carl Martin's artist page as a user of the 3 Band Parametric EQ².

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