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Product Description
800BM; a tribute to the GK800RB amplifier served as a Back/Rear Mount option.
Get that signature sound, straight out of your bass.
Make it growl, make it deep, make it clear. It’s all there!!
(!!Knobs Sold separately!!)
Active controls:
-Stacked Bass/Treble
-Stacked Hi-mid/Lo-mid
-Contour switch
Voltage: 9 to 27VDC Current Draw: +- 3mAh (9v)
All our preamps are solderless
Product Specs/Additional Information
The 800BM preamp borrows the EQ section of the famous GK800RB amplifier and squeezes it into an onboard preamp, this time with a Contour switch for an increase in sound options.
This tone stack has some serious high-frequency power and a very deep bottom end, just like the amplifier it’s based on, allowing you to explore different tones directly from your instrument.
The Hi-mid and Treble controls are highly interactive; the same goes for the Lo-Mid and Bass controls and the overall sound is always very “cut through” and clear sounding.
This preamps consists only of the Active components. This gives the user the chance to wire the passive elements (Volume, Tone, switches, etc.) to his preference.
For a full version of the 800BM, check the 800BMF.
Treble: Boost and cut around 4khz
Hi- Mid: Boost and cut at around 1khz
Bass: Boost and cut at around 60Hz
Lo- Mid: Boost and cut at around 250Hz
Contour switch: EQ pre-shape (V)
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Product Description
800BM; a tribute to the GK800RB amplifier served as a Back/Rear Mount option.
Get that signature sound, straight out of your bass.
Make it growl, make it deep, make it clear. It’s all there!!
(!!Knobs Sold separately!!)
Active controls:
-Stacked Bass/Treble
-Stacked Hi-mid/Lo-mid
-Contour switch
Voltage: 9 to 27VDC Current Draw: +- 3mAh (9v)
All our preamps are solderless
Product Specs
The 800BM preamp borrows the EQ section of the famous GK800RB amplifier and squeezes it into an onboard preamp, this time with a Contour switch for an increase in sound options.
This tone stack has some serious high-frequency power and a very deep bottom end, just like the amplifier it’s based on, allowing you to explore different tones directly from your instrument.
The Hi-mid and Treble controls are highly interactive; the same goes for the Lo-Mid and Bass controls and the overall sound is always very “cut through” and clear sounding.
This preamps consists only of the Active components. This gives the user the chance to wire the passive elements (Volume, Tone, switches, etc.) to his preference.
For a full version of the 800BM, check the 800BMF.
Treble: Boost and cut around 4khz
Hi- Mid: Boost and cut at around 1khz
Bass: Boost and cut at around 60Hz
Lo- Mid: Boost and cut at around 250Hz
Contour switch: EQ pre-shape (V)






