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home > John East Uni-Pre 3 Band Bass Preamps > John East Uni-Pre 3 Band Bass Preamps
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John East Uni-Pre 3 Band Bass PreampsMID EQ SWEEP FOR ULTIMATE MID RANGE CONTROL EASY INSTALL USING SCREW TERMINALS SMART MODULAR DESIGN ULTRA HIGH QUALITY COMPONENTS 3 BAND EQ PLUS PASSIVE TONE CONTROL (4 & 5 KNOB VERSIONS) FREE SHIPPING IN THE USA EXPERT TECHNICAL SUPPORT IN STOCK MEANS IN STOCK DESCRIPTION The John East Uni Pre represents the UK manufacturer's most flexible, comprehensively designed onboard bass circuit. If you are the type of bass player who demands granular control
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wave form bullet iconMID EQ SWEEP FOR ULTIMATE MID-RANGE CONTROL

wrench bullet iconEASY INSTALL USING SCREW TERMINALS

data science bullet iconSMART MODULAR DESIGN

original bullet iconULTRA-HIGH QUALITY COMPONENTS

good bullet icon3 BAND EQ PLUS PASSIVE TONE CONTROL (4 & 5 KNOB VERSIONS)

 

empty box iconFREE SHIPPING IN THE USA
configuration iconEXPERT TECHNICAL SUPPORT
checklist iconIN STOCK MEANS IN STOCK

 

DESCRIPTION

The John East Uni-Pre represents the UK manufacturer's most flexible, comprehensively designed onboard bass circuit. If you are the type of bass player who demands granular control over every aspect of your tone, this preamp is perfect for you. It allows for a deep level of customization, ensuring that you can make it do exactly what you need it to do for your specific instrument and gigging requirements.

The Uni-Pre gives you a unique, highly musical EQ curve right out of the box, but crucially, it allows you to switch it off so you can have a completely flat response. This allows the preamp to complement a wide variety of different bass styles and pickup configurations.

Furthermore, the sheer adaptability of this preamp is a standout feature. All of its critical EQ frequency points can be individually selected and fine-tuned via a series of precise internal dip switches. You are never stuck with a frequency that fights against your instrument's natural tone.

Despite its deep internal complexity, the external controls remain intuitive, allowing you to make quick, effective adjustments on the fly. If you are actively searching for one of the most flexible, highly customizable preamps available, take a look at the John East Uni-Pre. It is a professional-grade tool built for the bass player who wants total control over their sound.

From Johne East:

The UNI-PRE 3 Band Preamp is a new generation bass preamp system from East UK. It’s a brand new design that sets new standards with unique features, designed to fit virtually any bass which has 3, 4 or 5 knobs with rear cavity electronics. The modular construction makes for easy installation, with simple plug connections between modules. External wiring, such as pickups and power, are simply connected using screw terminals.

Available in Black and Chrome finish.

CONFIGURATIONS

Uni-Pre 3 Knob, 1 Switch - Volume/Blend Stack -- Mid/Mid Frequency Sweep Stack -- Treble/Bass Stack -- Active-Passive Switch

***As a couresty, we can remove the switch from the 3 Knob configuration for players looking for a 3 Knob, No Switch layout. When checking out, include the following in the order note: "Please Remove Switch".

Uni-Pre 4 Knob - Volume/Blend Stack -- Mid/Mid Frequency Sweep Stack -- Treble/Bass Stack -- Passive Tone with Active-Passive Push-Pull

Uni-Pre 5 Knob - Volume -- Blend -- Mid/Mid Frequency Sweep Stack -- Treble/Bass Stack -- Passive Tone with Active-Passive Push-Pull

Uni-Pre 5 Knob, 1 Switch - Volume -- Blend -- Mid/Mid Frequency Sweep Stack -- Treble/Bass Stack -- Passive Tone -- Active-Passive Switch

TECH & SPECS

  • Totally independent active and passive signal paths guarantee completely smooth blend when set to active.
  • Custom designed pots allow optimal placement of all controls within active and passive signal paths.
  • Class A FET input stages for great sound quality, with two gain trim preset adjusters for each pickup.
  • Operational response of Bass Control can be set internally at both the lower and upper ends of the bass spectrum.
  • Treble Control with internally adjustable frequency voicing, plus Bright as a pull switch.
  • Mid Control with Frequency Sweep.
  • Overall response can be set as flat or with pre-shaper contour, which adds some warmth and sheen.
  • Modular concept allows for easy installation and replacement of parts should that ever be necessary, all with pluggable connections.
  • Screw terminals are used for all external connections such as pickups, power and grounding, for easy installation.


  • FLAT RESPONSE: Neutral response setting.
  • PRE-SHAPE: Gentle lift at the lower and higher frequencies, peaking +4dBs at 40Hz & 10kHz.
  • PICKUP GAIN: Internal Trimmers 0-12dBs for each pickup in Active Mode.
  • BASS CONTROL: +/- 18dBs Cut/Boost with internally adjustable ‘bass window’.
  • BASS WINDOW: Lower Frequency Filter 20-80Hz & Higher Frequency Filter 40–200Hz.
  • MID CONTROL: +/- 14dBs Cut/Boost with Frequency Sweep 100Hz – 2.5kHz.
  • TREBLE CONTROL: +/- 18dBs with internally Shelf Frequency 1kHz – 7.5kHz, Pull for Bright peaking at 10kHz.

Uni-Pre 3 Knob User Manual

Uni-Pre 4 Knob User Manual

Uni-Pre 5 Knob User Manual

John East Uni-Pre 3 Band Bass Preamps

Item no : 31139543938
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US$ 197.50
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