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Wayne Jones AUDIO @ NAMM 2023, April 13 – 15, Booth: 16322

Showcasing Dolby Atmos 7.1.4 studio monitor system using WJA Upload App for loading SoundID Reference profiles directly into monitors
New product releases for Bass Guitar Amplification

WJBP Stereo Valve Bass Pre-Amp DI

**WJBP Pre-Amp DI new 2021 model release!!!

New Features:

  • EQ – Features extended top end control
  • Band 5 has been modified & reset at 5kHz
  • Addition of a 6thband set at 10kHz
  • Input clip Indicator – Now much easier to read at top left corner
  • Removal of FX blend control – Found to be unnecessary
  • Removal of Tuner- Most players use their own
  • The WJBP is now is exactly the same as first channel of WBPII twin channel preamp

Click Images For Gallery View

WJBP bass guitar Stereo Bass Pre-Amp DI


WJBP bass guitar Stereo Bass Pre-Amp DI



Wayne Jones Audio - 1000 Watt 1x10 Stereo/Mono bass guitar Bass Cabinets with WJBP Pre-Amp DI




Wayne Jones AUDIO, bass guitar powered bass cabinets, direct from manufacturer, 100% satisfaction guaranteed. Speakers for bass guitars.WJBP Bass Guitar Pre-Amp DI

Notes from Wayne Jones: My perfect sound was an Avalon 737 studio pre through my WJ powered cabs. So I set out to design a bass pre-amp that truly reproduced your bass sound & thus enabled you to tailor your sound. Also the tone controls had to work in the right areas & the pre had to have all the bells & whistles we need to do our job. Again no expense spared, just the highest quality components I could get for everything we need on stage & in the studio. These were my Instructions to my Engineer.

I have achieved that with the WJBP

This pre will also make front of house engineers happy as what goes in comes out.

The WJBP is designed with a no compromise attitude in Cost, Quality, Components & Features just as are WJ High End High Powered Bass Cabinets.


  • Input 1/4” phono stereo/mono jack
  • Input Gain For both Passive & Active basses
  • -10 Db pad
  • Input Gain clip Indicator LEDS (top left corner)
  • Tone controls are critically set by Wayne & are extremely accurate in the attack points of each string. You can set them by one for each string on your bass All +15Db -20 Db
  • Incredible separation between the tone controls
  • There is also a 30 Hz boost for those that may like it ( not really needed at all as the Bass control gives such a great bottom end with ultimate attack). In/out button for selection
  • Compressor: Optical, automatically senses & is very effective even with a very small amount engaged. In/out button for selection
  • Balance: This is a balance control for stereo operation e.g. 2 WJ 2x10 or Stereo WJ 1x10 Powered cabs.
  • Master volume Controls output
  • Pre-Amp Output Indicator LEDS (top right corner) tell you if you are overloading the WJBP output
  • Mute - Puts the WJBP in standby mode. LED Indicates when in use. The Mute mode should also be used for power up of the WJ Powered cabs, otherwise a very loud 1000watts will sound when WJ Powered cab (or separate power amp) is turned on.
  • It also operates the built in Tuner. For standard tuning for 4, 5 & 6 string basses
  • Foot switch mutes all output for silent tuning.


Master Outs 2 balanced XLR (recommended) outs for connection to WJ powered cabinets or to separate power amps Balance control on from panel will affect these outputs.

Also a choice of 2 Unbalanced 1/4" outputs for same function. (not recommended as output is lower)

All master outs can be used together as a pair or Individually with balance control set to the respective output

FX Send & Return - Stereo or mono

Foot switch - Mutes all output

DI Output - Balanced XLR out with Level control & ore or post EQ button

Aux Input - Stereo input, both 6.3mm & 1/4” phono. You an use this to plug items such as iPad, iPhone backing tracks etc. to play along with.

Headphone With Volume Control - Plug in your headphones to practise with. You can use the WJBP by itself without plugging into a power amp.

Rack Mount Ears - Included


  • Input 1/4” Active Unbalanced
    Impedance 220K
    Max Level +20dBu
  • Outputs
    Balanced XLR
    Impedance 300 Ohm
    Max Level +27dB
    1/4” TRS Unbalanced
    Max Level +22dB
    Frequency Response 10 hZ to 20 KHZ
    THD+Noise@1KHz 2.5 %
    Signal to noise ratio >80dB Limit 2
    Total Gain 62dB
    Universal Line Voltage 115/240 VAC, 50/60Hz
  • Shipping size
    40.5 cm x 32.5 cm x 18 cm
    Weight 5.9kg
  • Rear Panel
    Inputs 1/4” & 3.5mm TRS Active Stereo
  • Impedance 20K
    Max Level +15 dBu
  • EQ Band frequencies:
    Band 1 20-300Hz, Centre set at 80Hz
    Band 2 60-1KHz, Centre set at 160 Hz
    Band 3 150-2.5KHz, Centre set at 500Hz
    Band 4 450-8KHz, Centre set at 1.6KHz
    Band 5 1KHz-20KHz Centre set at 5KHz
    Band 6 Centre set at 10KHz
  • Size 6.6 cm x 30 cm x 24 cm (including knobs)
    Weight 2.41kg
Product Videos
Introducing the WJBP Bass Guitar Pre-Amp DI
How a Front of House engineer thinks about your sound

WJBP Stereo Valve Bass Pre-Amp DI Rear View

Wayne Jones Audio - 1000 Watt 1x10 Stereo/Mono bass guitar Bass Cabinets with WJBP Pre-Amp DI


WJ 2x10 powered 1000 watt bass guitar cabinet with WJBP Pre-Amp DI


WJ 2x10 powered 1000 watt bass guitar cabinets with WJBP Pre-Amp DI