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John East Uni-Pre 2-Pickup 4-Knob 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P

SKU:Uni-Pre 4-Knob

Details:

  • 3-band: 2-pickup, 4-knob
  • Volume/Blend Stack - Treb/Bass Stack - Mid/Mid Freq Stack - Passive Tone (A/P Push-Pull)

$275.00 - $295.00
$275.00 - $295.00

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DESCRIPTION

Uni-Pre 4 Knob

2 Pickup, 4-knob

  1. Volume/Blend Stack
  2. Treble/Bass Stack
  3. Midrange/Midrange Freq. Stack
  4. Passive Tone (Push/Pull for Active/Passive)

The Uni-Pre 4 Knob 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 knobs with rear cavity electronics.

Its main components are a Volume/Blend module and EQ.

The Volume/Blend has totally independent dual active and passive signal paths, controlled simultaneously with a conventional knob set.

The EQ module allows internal voicing adjustment for the treble as well as the lower and upper bass frequencies.

This is in order to allow finely tuned focus on the most crucial bass spectrum.

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.

The potentiometers have 10.0mm threaded bushings designed for rear cavity mounting in the bass. Flat wire connections to the potentiometers and toggle switch allow for a flexible layout.

The preamp comes fully wired including battery clip and Switchcraft jack.

For ease of installation, pickups are connected via screw terminals.

A ground wire will need to be connected to grounding points such as the bridge and any internal shielding.

Out of the box, just connect the pickups using the screw terminals, snap in a battery, and you'll get sound.

Features

  • 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 adjustments 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.
  • Question: Where Can I Buy a John East Uni-Pre 2-Pickup 4-Knob 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P?

    Answer: You can buy this from Best Bass Gear by Calling 877-839-3531 or Emailing us at sales@bestbassgear.com

    Reviews

    Rate and Review this item
    Verified Buyer
    John East Uni-Pre 4-Knob 3-Band
    By Mark
     
    I had an Atelier Z fretless with a Bartolini NTBT 2-Band. I didn't feel that the Bart was delivering what the bass was capable of. I value mid-range adjustment and particularly a sweepable mid-range tool. Additionally, I wanted a passive tone control. This was the only setup where I could find the combination of both of these things. Installation was straightforward. The only issue I encountered was that the receptors for the pickup wiring were quite small for the Cold/Gnd wires (there were 2 from the Atelier Z pups.
    The result of the preamp change was amazing. The bass now has the Swiss army knife of tonal options. Despite thinking that a sweepable mid + passive tone would be simple to use, it delivered a far greater range of options than I had expected. I think that a dot on the knob exteriors would help the user get acquainted with the system. I think they should add this feature.
    All in all, highly recommended. Happy camper.
    Verified Buyer
    a_versatile_product
    By Michael
     
    I like to dial up different tones for songs, and this allows for so much variety. Very pleased with my acquistion!
    Verified Buyer
    Just installed an east Uni pre 4 knob with Bartolini soap bars and I couldn’t be more happy..
    By Peter C.
     
    Just installed an east Uni pre 4 knob with Bartolini soap bars and I couldn’t be more happy..

    Install was pretty easy had a little issue with one of the jumpers but, with a little help from Frankie I was up and running..
    Frank did a zoom call and was spot on with the fix.
    One of the jumpers popped off during the install and I put it back in the wrong place..
    A better pic of the circuit board from East would have helped, but as I said Frank was right there and sent a pic too which really helped !
    Once up and running fine tuning to your liking Is a breeze..
    The main eq board has a few jumpers, and there are fine tuning pots, all explained very well in the paper work from East.
    The pre it’s self is very versatile and sounds amazing.———
    All in all a great purchasing experience and great support all the way through from the Best Bass Gear team!!!