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Review Jackson Audio Prism Preamp - Silver

Jackson Audio Prism Preamp - Silver

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($259.95 Incl. tax)
1 in stock
Jackson Audio Prism Preamp - Silver
B's Music Shop.
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Designed as the ultimate tone shaping tool for a player’s pedalboard, the PRISM is a buffer, boost, preamp, EQ and overdrive all in one beautiful and compact stainless steel enclosure!

Much like an optical prism, which takes white light and breaks it apart into the different colors, the Jackson Audio PRISM takes your guitar’s natural tone and allows you to boost it, shape it and transform it into a new tone that is uniquely you!

Use it shape your tone, slam the front of your amp or add new dimension to your existing pedals, any way you use it, we believe the PRISM will be the cornerstone of your rig for many years to come!



Here is a rundown of all of the controls on the PRISM.


An extremely powerful active EQ, the TONE control adjusts the high frequencies by giving a +/-15dB boost/cut to those frequencies.


Selects between 3 varying levels of gain for each boost circuit.

HIGH – Voiced for heavy breakup/lead tones.

MED – Voiced for mild breakup/rhythm tones.

LOW – Voiced for maximum clean headroom.


The BYPASS SWITCH is used to turn the PRISM ON/OFF and is also used to enter programming mode.

To enter programming mode, press and hold the BYPASS SWITCH for five seconds.

While in programming mode, rotate the BOOST control to set INDICATOR LIGHT brightness.

Press the BYPASS SWITCH three times to toggle the active state of the pedal between boot up ON (green) and boot up OFF (yellow).

Press and hold the BYPASS SWITCH for five seconds to save settings.


An extremely powerful active EQ, the BODY control adjusts the low frequencies by giving a +/-15dB boost/cut to those frequencies.


The BOOST control sets the overall level of boost available from the PRISM. Think of the BOOST control as a master volume that works in tandem with the PRE GAIN switch to dial in the ratio of gain to boost level.


Selects between the 3 boosts circuits available in the PRISM.

COLOR – Vintage Silicon Treble Booster Style boost. Perfect for Brian May (Queen) style rhythm and lead tones!

AMP – A very musical sounding MOSFET boost that emulates the tonal response of an overdriven vacuum tube amp!

TRANS – An ultra transparent 18V powered JFET boost circuit. Sounds like you only LOUDER!


The INDICATOR LIGHT indicates the ON/OFF status of the PRISM and changes colors to give a visual indication of the level of boost selected.