The 800JP (previously 800TS) preamp borrows the EQ section of the famous GK800RB amplifier and squeezes it into an onboard preamp, loaded into a Jazz-plate, for you Jazz bass lovers.
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. A new function, the Contour switch, allows to add a Pre-shape (V) EQ to the sound.
(To use with Jazz-basses with jack switch mounted on the body)
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)
Active/Passive switch: on/off
3 way Passive Tone Switch: No Tone, Tone 1, Tone 2
Voltage: 9 to 27VDC Current Draw: +- 2mAh (9v)