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John East

UNI01-XBB-4K3B

John East Uni-Pre 3 Band Bass Preamps

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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

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

DESCRIPTION

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 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 finish.

CONFIGURATIONS

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

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.

4 Knob Layout



5 Knob Layout

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