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  • This product is discontinued.

    Current version — shift-line.com/olympic

    Device name: Olympic Bass Preamp
    Device type: Studio-grade tube preamp for bass guitar
    Instruments: Bass Guitar
    Short description: A new release of our well known preamp with new features
    Olympic mkII - Bass Preamp for perfectionists: high voltage vacuum tube amplification, FX loop, headphone and balanced (XLR) DI output, separate aux input for drum machine/mp3 player - all less than 5"x4" in size. Great solution to carry your sound with you - concerts, recording, home training and everywhere else.

    • Pure tube circuit from INPUT to SEND jack. High anode voltage from specially designed transformer, no SMPS circuitry used.
    • Wide gain control gives you possibility to reach all sounds from clean to naturally compressed or even a bit overdriven signal. Try it with external booster if you need more drive.
    • High level output designed to be connected directly to power amp. Use ‘power amp in’ or ‘return’ jack on your combo/amp to make your instrument sound the same with different amplifiers.
    • XLR balanced output with switchable ground lift for recording or sending to mixer console.
    • Comes with Tung-Sol 12ax7 tube installed. All tubes are checked to be low-noise and low-microphonic.
    • DC heater supply to keep noise to a minimum.
    • Comes with 220v mains power adapter (In order to use it in countries with different mains voltage, please ensure you have appropriate power adapter or voltage transformer).

    1. Knob Master - Output level. Affects OUT and PHONES outputs.
    2. Knobs Treble, Middle, Bass - Three-band EQ
    3. Knob Gain - Input sensitivity. Wide control from clean to compressed or overdriven sound.
    4. Switch Bright - High frequencies boost. Note: Gain knob position affects to the high frequencies amount added with bright switch.
    5. Switch Ground Lift - Disconnect ground pin on balanced output to prevent ground loops.

    1. IN - High-impedance input. Could be connected to any signal sources like guitars, analog and digital synthesizers with mono output
    2. OUT - 1/4” mono +20 dBu output. Should be connected to ‘Return’ or ‘Power amp in’ jack on your amplifier
    3. Send,Return - Series loop. “Send” also can be used as additional -20 dBu output
    4. Phones - 1/8” stereo output for headphones.
    5. Aux - 1/8” stereo input for drum machine, player or other signal source.
    6. Balanced Out - +10 dBu XLR balanced output. MASTER knob does not change level on this output.

    Dimensions Box dimensions without knobs are 119х93х34 mm (4.7x3.7x1.3 inches).
    Power adapter 12V AC, 750mA. 220V primary (for european sockets) adapter included


Demo videos

  • OLYMPIC MkII tube bass preamplifier + Fender Jazz Bass https://shift-line.com/olympic Fender Jazz Bass - Shift Line OLYMPIC mkII - Ampeg power amp - 2X15 (sunn o))) style cab) - ribbon mic + reamp from recorded XLR output - TC Electronic RH450 power amp - 4X10 cab - Rode NT2-A + OLYMPIC XLR out
  • OLYMPIC mkII + Gibson RD Artist Bass
  • Shift Line OLYMPIC mkII tube preamplifier + Fender Precision Bass
  • Shift Line OLYMPIC mkII + Fender Jazz Bass
  • Shift Line OLYMPIC mkII + Music Man Stingray 5
  • Shift Line OLYMPIC mkII + Gibson Thunderbird
  • Shift Line OLYMPIC mkII + Fender Precision Bass
  • Olympic and fretless bass with nylon strings (some hum came from pickups)