Goliath "Plus"
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The WR Goliath "Plus" with "DI-XLR" output and with the true Bypass switch

price: 600 Euro

>>> NEW 2021:
all Goliath models can now be equipped with an adjustable headphone output.

Surcharge 40 €
(please indicate this when ordering).

Goliath Tube Emphasizer

picture shows the "Goliath Plus"

Goliath Phones
New 2021: adjustable headphone output.
Surcharge 40 €
(please indicate this when ordering)



WR Goliath Tube Bass Emphasizer DI "Plus"

The Goliath "Plus" is an exciting new development for bass players wanting the richer, enhanced tonality associated with tubes. This innovative design uses specialised, limited availability, low voltage tubes to create wonderful tone in a limited-edition, hand-built unit.
No bass pedal board should be without one!

Equally effective across the range, from low-level to LOUD, the quality of the sound is consistently high, allowing the same amazing sound on stage as achieved in the studio. The Goliath "Plus" will not change the basic sound of your Bass Guitar(s) as other preamps often do.

The Goliath "Plus" is equipped with a “DI-XLR” Output for galvanic isolation with a “Lehle LTDI-L transformer”.


  • The Goliath "Plus" is a low voltage (24 Volt DC) tube pre-amplifier created especially for Bass Guitars. But we have also had impressive results with Hammond organs! Whatever you play, try the Goliath, it might give you the sound you've been looking for.“

  • The Goliath "Plus" was created as a way of adding the warm harmonic sounds associated with the use of tubes to set-ups using solid-state amplifiers: to ‘push-up’ the sound.

  • This unit is powered by a 12 Volt DC power supply – as required by the tubes and Lehle LTDI-L transformer. This special feature of this pre-amp ensures user safety because there is no high voltage on interior or exterior components.

  • The Goliath "Plus" has been designed to give the best results: a great sound from a robust and easy to use product. The construction methods and components used are selected only for their high quality and the positive effects they contribute.  

  • The Goliath "Plus" is not a mass-produced product. The components are carefully checked, and then each unit is assembled individually, using point-to-point (hand soldered) connections.

  • All these steps combine to create a limited edition, hand-built pre-amp of the highest quality that will enhance the sound of any bass guitar setup. 


  • The Goliath "Plus" allows you to get the warm harmonic sound of an electron tube (ECC86), combined with a little more compression and, if necessary, a higher output volume (controlled by the Sensitive switch).

  • The DI connector can also be used as standalone unit to send the output signal directly to a mixing console or a recording unit etc. The high quality components and features of the Lehle transformer will be only the best for the Goliath.

  • The "GND/LIFT switch": move the ground button on "Lift" position to eliminate hum. If the ground switch is on "Lift" position the in built Lehle transformer ensures galvanic isolation between the shielding of the Goliath "Plus" and the earth conductor of the XLR cable attached. If this setting generates hum, activating the ground switch may solve this. When the ground button is on position "GND", the shielding of the DI and the earth conductor of the XLR cable are connected.

  • The "Tone controls" Treble, Middle and Bass allow you to have a good overall sound control, with a good basic Bass sound. The output sound is created by the combination of the settings of all three controls: the frequencies affected by each control are changed somewhat by the settings of the other controls.

  • The "Sensitive Potentiometer" the sensitive input-gain potentiometer continuously controls the input gain.

  • The "Deep switch" includes or excludes a capacitor from the circuit. This increases and slightly changes the Bass frequency.

  • The "True Bypass switch" allows you to play the unit in a live gig either as a Booster or as an excellent primary pre-amp.

  • The use of 12 Volt power supply ensures the safety of the user:  there is no possibility of high voltage electric shocks.

  • All components are individually selected and are carefully checked before installation.


 Respected Bass player said:

  • "This unit gives me a warm harmonic sound a little more compression and the dynamic range over all frequencies of the Goliath "Plus" is amazing I won’t play without it, it gives a pure sound to my 'solid state' amplifier and even improves the sound of my tube amplifier! The effect is natural and subtle. If you take the Goliath away, that’s when you really notice the difference!"

  • "I enjoy the Goliath very much. Yesterday I even tried it without amplifier plugging it directly into the PA and I was very satisfied.
    Using it with my bassamp is also very pleasing. I used to play an Orange tube amplifier, which I eventually found too heavy. Meanwhile I utilise a light and handy digital amp with two light-weight 10-inch-speakers. The Goliath does exactly what I hoped for, it gets this tube touch into my bass sound. Thank you for developing such a device. Best wishes". Claus Roeske (Germany)


Download the manual Goliath "Plus"


Goliath Emphasizer DI Back
picture shows the Goliath "Plus"


picture shows the Goliath "Plus" with an auxiliary
“DI-XLR” Output for galvanic isolation ” ("Lehle LTDI-L Transformer")

If you have any questions, please feel free to contact me

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