FLEXCORE

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CONFIGURE YOUR PREAMP
Flexcore Preamp System

FLEX CORE SYSTEM

Configure your Flex Core system from our selection of modules to give you the control you need for the character that you want. And don’t worry—our online configuration tool makes it easy to put together the system that’s right for you.

Whether you’re a bass player looking for a superior preamp with just the right features or a dealer with customers’ differing tastes, there is a configuration of the Flex Core that will work for you.

STARTING AT $299

    Layout #1

    For one pickup - 2 band preamp with 2 knobs and 1 switch
    (Stacked volume/tone, stacked bass/treble, active/passive switch)

    Layout #2

    For one pickup - 2 band preamp with 3 knobs and 1 switch
    (Stacked volume/tone, bass, treble, active/passive switch)

    Layout #3

    For one pickup - 2 band preamp with 3 knobs and 1 switch
    (Volume, tone, stacked bass/treble, active/passive switch)

    Layout #4

    For one pickup - 2 band preamp with 4 knobs and 1 switch
    (Volume, tone, bass, treble, active/passive switch)

    Layout #5

    For one pickup - 2 band preamp with 2 knobs and 1 switch
    (Volume, stacked bass/treble, active/passive switch)

    Layout #6

    For one pickup - 2 band preamp with 3 knobs and 1 switch
    (Volume, bass, treble, active/passive switch)

    Layout #7

    For two pickups - 2 band preamp with 3 knobs and 1 switch
    (Volume, stacked volume/tone, stacked bass/treble, active/passive switch)

    Layout #8

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Volume, stacked volume/tone, bass, treble, active/passive switch)

    Layout #9

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Volume, volume, tone, stacked bass/treble, active/passive switch)

    Layout #10

    For two pickups - 2 band preamp with 5 knobs and 1 switch
    (Volume, volume, tone, bass, treble, active/passive switch)

    Layout #11

    For two pickups - 2 band preamp with 3 knobs and 1 switch
    (Volume, volume, stacked bass/treble, active/passive switch)

    Layout #12

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Volume, volume, bass, treble, active/passive switch)

    Layout #13

    For two pickups - 2 band preamp with 3 knobs and 1 switch
    (Stacked volume/tone, blend, stacked bass/treble, active/passive switch)

    Layout #14

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, blend, bass, treble, active/passive switch)

    Layout #15

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Volume, blend, tone, stacked bass/treble, active/passive switch)

    Layout #16

    For two pickups - 2 band preamp with 5 knobs and 1 switch
    (Volume, blend, tone, bass, treble, active/passive switch)

    Layout #17

    For two pickups - 2 band preamp with 3 knobs and 1 switch
    (Volume, blend, stacked bass/treble, active/passive switch)

    Layout #18

    For two pickups - 2 band preamp with 4 knobs and 1 switch
    (Volume, blend, bass, treble, active/passive switch)

    Layout #19

    For one pickup - 3 band preamp with 3 knobs and 1 switch
    (Stacked volume/tone, stacked bass/treble, hi mid, active/passive switch)

    Layout #20

    For one pickup - 3 band preamp with 3 knobs and 1 switch
    (Stacked volume/tone, stacked bass/treble, lo mid, active/passive switch)

    Layout #21

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, bass, treble, hi mid, active/passive switch)

    Layout #22

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, bass, treble, lo mid, active/passive switch)

    Layout #23

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Volume, tone, stacked bass/treble, hi mid, active/passive switch)

    Layout #24

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Volume, tone, stacked bass/treble, lo mid, active/passive switch)

    Layout #25

    For one pickup - 3 band preamp with 5 knobs and 1 switch
    (Volume, tone, bass, treble, hi mid, active/passive switch)

    Layout #26

    For one pickup - 3 band preamp with 5 knobs and 1 switch
    (Volume, tone, bass, treble, lo mid, active/passive switch)

    Layout #27

    For one pickup - 3 band preamp with 3 knobs and 1 switch
    (Volume, stacked bass/treble, hi mid, active/passive switch)

    Layout #28

    For one pickup - 3 band preamp with 3 knobs and 1 switch
    (Volume, stacked bass/treble, lo mid, active/passive switch)

    Layout #29

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Volume, bass, treble, hi mid, active/passive switch)

    Layout #30

    For one pickup - 3 band preamp with 4 knobs and 1 switch
    (Volume, bass, treble, lo mid, active/passive switch)

    Layout #31

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, stacked volume/tone, stacked bass/treble, hi mid, active/passive switch)

    Layout #32

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, stacked volume/tone, stacked bass/treble, lo mid, active/passive switch)

    Layout #33

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, stacked volume/tone, bass, treble, hi mid, active/passive switch)

    Layout #34

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, stacked volume/tone, bass, treble, lo mid, active/passive switch)

    Layout #35

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, volume, tone, stacked bass/treble, hi mid, active/passive switch)

    Layout #36

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, volume, tone, stacked bass/treble, lo mid, active/passive switch)

    Layout #37

    For two pickups - 3 band preamp with 6 knobs and 1 switch
    (Volume, volume, tone, bass, treble, hi mid, active/passive switch)

    Layout #38

    For two pickups - 3 band preamp with 6 knobs and 1 switch
    (Volume, volume, tone, bass, treble, lo mid, active/passive switch)

    Layout #39

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, volume, stacked bass/treble, hi mid, active/passive switch)

    Layout #40

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, volume, stacked bass/treble, lo mid, active/passive switch)

    Layout #41

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, volume, bass, treble, hi mid, active/passive switch)

    Layout #42

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, volume, bass, treble, lo mid, active/passive switch)

    Layout #43

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, blend, stacked bass/treble, hi mid, active/passive switch)

    Layout #44

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, blend, stacked bass/treble, lo mid, active/passive switch)

    Layout #45

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Stacked volume/tone, blend, bass, treble, hi mid, active/passive switch)

    Layout #46

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Stacked volume/tone, blend, bass, treble, lo mid, active/passive switch)

    Layout #47

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, blend, tone, stacked bass/treble, hi mid, active/passive switch)

    Layout #48

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, blend, tone, stacked bass/treble, lo mid, active/passive switch)

    Layout #49

    For two pickups - 3 band preamp with 6 knobs and 1 switch
    (Volume, blend, tone, bass, treble, hi mid, active/passive switch)

    Layout #50

    For two pickups - 3 band preamp with 6 knobs and 1 switch
    (Volume, blend, tone, bass, treble, lo mid, active/passive switch)

    Layout #51

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, blend, stacked bass/treble, hi mid, active/passive switch)

    Layout #52

    For two pickups - 3 band preamp with 4 knobs and 1 switch
    (Volume, blend, stacked bass/treble, lo mid, active/passive switch)

    Layout #53

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, blend, bass, treble, hi mid, active/passive switch)

    Layout #54

    For two pickups - 3 band preamp with 5 knobs and 1 switch
    (Volume, blend, bass, treble, lo mid, active/passive switch)

    Layout #55

    For one pickup - 4 band preamp with 3 knobs and 1 switch
    (Stacked volume/tone, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #56

    For one pickup - 4 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #57

    For one pickup - 4 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #58

    For one pickup - 4 band preamp with 5 knobs and 1 switch
    (Stacked volume/tone, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #59

    For one pickup - 4 band preamp with 4 knobs and 1 switch
    (Volume, tone, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #60

    For one pickup - 4 band preamp with 5 knobs and 1 switch
    (Volume, tone, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #61

    For one pickup - 4 band preamp with 5 knobs and 1 switch
    (Volume, tone, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #62

    For one pickup - 4 band preamp with 6 knobs and 1 switch
    (Volume, tone, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #63

    For one pickup - 4 band preamp with 3 knobs and 1 switch
    (Volume, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #64

    For one pickup - 4 band preamp with 4 knobs and 1 switch
    (Volume, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #65

    For one pickup - 4 band preamp with 4 knobs and 1 switch
    (Volume, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #66

    For one pickup - 4 band preamp with 5 knobs and 1 switch
    (Volume, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #67

    For two pickups - 4 band preamp with 4 knobs and 1 switch
    (Volume, stacked volume/tone, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #68

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, stacked volume/tone, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #69

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, stacked volume/tone, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #70

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, stacked volume/tone, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #71

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, volume, tone, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #72

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, volume, tone, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #73

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, volume, tone, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #74

    For two pickups - 4 band preamp with 7 knobs and 1 switch
    (Volume, volume, tone, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #75

    For two pickups - 4 band preamp with 4 knobs and 1 switch
    (Volume, volume, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #76

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, volume, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #77

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, volume, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #78

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, volume, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #79

    For two pickups - 4 band preamp with 4 knobs and 1 switch
    (Stacked volume/tone, blend, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #80

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Stacked volume/tone, blend, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #81

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Stacked volume/tone, blend, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #82

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Stacked volume/tone, blend, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #83

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, blend, tone, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #84

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, blend, tone, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #85

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, blend, tone, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #86

    For two pickups - 4 band preamp with 7 knobs and 1 switch
    (Volume, blend, tone, bass, treble, hi mid, lo mid, active/passive switch)

    Layout #87

    For two pickups - 4 band preamp with 4 knobs and 1 switch
    (Volume, blend, stacked bass/treble, stacked hi mid/lo mid, active/passive switch)

    Layout #88

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, blend, stacked bass/treble, hi mid, lo mid, active/passive switch)

    Layout #89

    For two pickups - 4 band preamp with 5 knobs and 1 switch
    (Volume, blend, bass, treble, stacked hi mid/lo mid, active/passive switch)

    Layout #90

    For two pickups - 4 band preamp with 6 knobs and 1 switch
    (Volume, blend, bass, treble, hi mid, lo mid, active/passive switch)

    Additional Options

    Each switch selects between a pair of frequencies for each midrange band. See FAQ for more info.

* Please note that a preamp system includes a CHROME toggle switch for Active/Passive unless black is selected as an upgrade or a Push/Pull pot is selected. Black switches for Active/Passive are not automatically upgraded if additional black switches (mid selection, coil tap, kill) are added. Please review the options before purchase.

Still not seeing the layout you need? Many questions can be answered on the FAQ page. Please take a few minutes to read it.

If you still have questions please CONTACT US and we can help with your custom configuration.

SPECIFICATIONS

Treble: +/- 15dB at 6kHz or 10kHz
Hi Mid: +/- 15dB at 1kHz or 1.8kHz
Lo Mid: +/- 12dB at 330Hz or 473Hz
Bass: +/- 12dB at 46Hz or 90Hz

Download the manual for detailed a explanation of all the components and their functions.

DOWNLOAD THE MANUAL
Flexcore Switch Types

Toggle switch options (from left to right):
Standard Chrome, Premium Chrome, Premium Black
(premium toggle switches include a dress nut)