John East

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East preamps was formed by John East in 1998 with the J-Retro 01 being the first product offered for Jazz and J Styled basses. The design of the J-Retro came into effect with John's lust for an unobtainable sound in live settings without requiring outboard preamps. Not content with an outboard option after building a few units he set about designing an onboard retrofit optiong that required no modification for install on his Jazz bass.

Before building such high end preamps as the J-Retro, J-Retro 01, and MMSR MusicMan units, John had his beginnings as a professional bass player. Most of his experience in electronics comes from being a player and understanding the need for a quality engineered flexible solution. He has also worked in the professional audio engineering and design field with companies such Solid State Logic and Oxford Digital. This combination of playing experience and audio engineering is what makes every East product unique and high quality. This performance can be found in the high quality pro audio feel of any of the East preamps.

  1. John East J Retro 2-Pickup 3-Knob 2-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Bl/Pickup Sw - A/P Sw

    $299.00 - $325.00
    The J Retro 01 Bass Preamp is designed to fit directly into standard "Jazz" style basses without modification, including a 9v battery.
    Control Configuration Volume/Blend Stack Treble/Bass Stack Mid/Mid Stack Blend & Pickups Switch Active/Passive Switch Available in Black, Chrome, or Gold Finish Description ...
  2. John East Uni-Pre 2-Pickup 5-Knob 3-Band Vol - Bl - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P

    $325.00 - $350.00
    2-pickup, 3-band, 5-knob Volume - Blend - Treble/Bass Stack - Midrange/Midrange Stack - Passive Tone (Push-Pull Active/Passive)
    Uni-Pre 5 Knob 2 Pickup, 5-knob Volume Blend Treble/Bass Stack Midrange/Midrange Freq. Stack Passive Tone (Push/Pull for Active/Passive) The Uni-Pre 5 Knob is a new generation...
  3. John East Uni-Pre 2-Pickup 3-Knob 1-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - A/P Sw

    Regular Price: $315.00

    Special Price $265.00 - $325.00

    3-band, 2-pickup, 3-knob 1 switch Volume/Blend Stack - Treble/Bass Stack - Midrange/Midrange Frequency Stack - Active/Passive Switch
    Uni-Pre 3 Knob 2 Pickup, 3-knob, 1 switch Volume/Blend Stack Treble/Bass Stack Midrange/Midrange Freq. Stack Active/Passive Switch The Uni-Pre 3 Knob is a new generation bass...
  4. John East Uni-Pre 2-Pickup 4-Knob 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P

    $325.00 - $350.00
    3-band: 2-pickup, 4-knob Volume/Blend Stack - Treb/Bass Stack - Mid/Mid Freq Stack - Passive Tone (A/P Push-Pull)
    Uni-Pre 4 Knob 2 Pickup, 4-knob Volume/Blend Stack Treble/Bass Stack Midrange/Midrange Freq. Stack Passive Tone (Push/Pull for Active/Passive) The Uni-Pre 4 Knob is a new generation...
  5. John East J Retro Deluxe 2-Pickup 4-Knob 2-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone - Bl/Pickup Sw - A/P Sw

    $325.00 - $350.00
    Same as J Retro, but with an added fourth knob for passive tone control. This preamp is made for Fender Deluxe style basses with a side mounted jack.
    Control Configuration Volume/Blend Stack Treble/Bass Stack Mid/Mid Stack Passive Tone Blend & Pickups Switch Active/Passive Switch Available in Black, Chrome, or Gold Finish ...
  6. John East MMSR 1-Pickup 3-Knob 3-Band Vol - Treb/Bass Stack - Mid/Mid Stack

    $230.00 - $245.00
    Control plate not included The BTB-MMSR 3 Knob, including Mid Sweep, has been designed with characteristics very similar to the original MM Stingray 2 Band EQ, but is not a copy of the original circuit.
    Control Configuration Volume Treble/Bass Stack Mid/Mid Stack Available in Black, Chrome, or Gold Finish Description The BTB-MMSR 3 Knob, including Mid Sweep, has been designed with characteristics...
  7. John East MMSR 1-Pickup 3-Knob 2-Band Vol - Treb - Bass

    $175.00 - $185.00
    Control plate not included. The BTB-MMSR has been designed with characteristics very similar to the original MM Stingray 2 Band EQ, but is not a copy of the original circuit.
    Control Configuration Volume Treble Bass Available in Black, Chrome, or Gold Finish Description The BTB-MMSR has been designed with characteristics very similar to the original MM Stingray?...
  8. John East Mid Sweep 1 or 2-Pickup 1-Knob 1-Band Mid/Mid Stack

    $110.00 - $120.00
    The MID SWEEP 01 is a stand-alone mid control which can be used on its own or cascaded in conjunction with other modules, including additional MID SWEEP 01s.
    Control Configuration Mid/Mid Stack Available in Black, Chrome, or Gold Finish Description The Mid Sweep 01 is a stand-alone mid control which can be used on its own or cascaded in conjunction with other...
  9. John East BTB-01 1 or 2-Pickup 1-Knob 2-Band Treb/Bass Stack

    $150.00 - $160.00
    The BTB-01 is based on the middle stack of the J-Retro 01 bass preamp. It consists of a single dual concentric knob stack with controls for Bass, Treble, and Bright functions.
    Control Configuration Treble/Bass Stack Available in Black, Chrome, or Gold Finish Description The BTB-01 is based on the middle stack of the J-Retro 01 bass preamp. It consists of a single dual concentric...
  10. John East MMSR 1-Pickup 4-Knob 3-Band Vol - Treb - Bass - Mid/Mid Stack

    $230.00 - $245.00
    The BTB-MMSR 4 Knob, including Mid Sweep, has been designed with characteristics very similar to the original MM Stingray 2 Band EQ, but is not an exact copy of the original circuit.
    Control Configuration Volume Treble Bass Mid Stack Available in Black, Chrome, or Gold Finish Description The BTB-MMSR 4 Knob, including Mid Sweep, has been designed with characteristics...
  11. John East MPM-01 Piezo Magnetic Buffer

    $110.00
    John East Piezo Magnetic Buffer
    The MPM-01 consists of two identical configurable high impedance buffer input amplifier stages. Designed for piezo as well as magnetic pickups, they can be configured to correctly mix piezo and magnetic pickup signals. Features 2 Class A...
  12. John East Uni-Pre 2-Pickup 5-Knob 3-Band Vol - Bl - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P (Chrome Knobs)

    $325.00
    Uni-Pre 5 Knob Chrome 2 Pickup, 5-knob Volume Blend Treble/Bass Stack Midrange/Midrange Freq. Stack Passive Tone (Push/Pull for Active/Passive) The Uni-Pre 5...
  13. John East Uni-Pre 2-Pickup 3-Knob 1-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - A/P Sw (Black Knobs)

    Regular Price: $315.00

    Special Price $265.00

    Uni-Pre 3 Knob Black 2 Pickup, 3-knob, 1 switch Volume/Blend Stack Treble/Bass Stack Midrange/Midrange Freq. Stack Active/Passive Switch The Uni-Pre 3 Knob is a new generation...
  14. John East Marcus Retro 2-Pickup 4-Knob 1-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P - Bl/Pickup Sw (With Scratch Plate)

    $350.00
    The Marcus Retro 01 was brought about due to requests from players owning the Marcus Miller basses.
    Control Configuration Volume/Blend Stack Treble/Bass Stack Mid/Mid Stack Passive Tone Push/Pull Active/Passive Pickup Blend Switch Description New For 2013! All New Marcus Retro's...
  15. John East MMSR 1-Pickup 4-Knob 3-Band Vol - Treb - Bass - Mid/Mid Stack (Black Knobs)

    $237.50
    The BTB-MMSR 4 Knob, including Mid Sweep, has been designed with characteristics very similar to the original MM Stingray 2 Band EQ, but is not a copy of the original circuit.
    Control Configuration Volume Treble Bass Mid Stack Black Finish Description The BTB-MMSR 4 Knob, including Mid Sweep, has been designed with characteristics very similar to the...
  16. John East Marcus Retro 2-Pickup 4-Knob 1-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Tone P/P A/P - Bl/Pickup Sw (Without Scratch Plate)

    $325.00
    The Marcus Retro 01 was brought about due to requests from players owning the Marcus Miller basses.
    Control Configuration Volume/Blend Stack Treble/Bass Stack Mid/Mid Stack Passive Tone Push/Pull Active/Passive Pickup Blend Switch Description New For 2013! All New Marcus Retro's...
  17. John East DJ Retro 2-Pickup 3-Knob 2-Switch 3-Band Vol/Bl Stack - Treb/Bass Stack - Mid/Mid Stack - Bl/Pickup Sw - A/P Sw

    $299.00
    Same as J Retro, but with curved plate to work on Lakland Darryl Jones model basses. Top knobs and plate are chrome, bottom knobs are black.
    Control Configuration Volume/Blend Stack Treble/Bass Stack Mid/Mid Stack Blend & Pickups Switch Active/Passive Switch Description Same as J Retro, but with curved plate to work...
  18. John East BLI-01

    $40.00
    9v or 18v East Battery monitor
    The East BLI-)1 is designed to indicate when the life of your 9v or 18v battery system is getting towards the end of its life. At the point the warning LED begins to flash, around once per second, there is still some useful life left in the battery....
  19. East/ACG Passive tone control module only

    $19.25
    Passive Tone control module can easily be added to any East or ACG preamp.