TAURUS

TUARUS 

ANALOG BASS PREAMP

The Classic Analog Bass Preamp pedal is like having a choice of 

amps right on your pedal board. Dial in a wide range of authentic

 tones with the 3-band tone stack and highly flexible Ultra-Hi and 

Ultra-Lo circuits. It’s the most affordable way into the pure analog

 bass tone . 

The Classic Analog Bass Preamp pedal is designed by musicians 

and built using only the best of components. Each pedal is tested 

to confirm that it meets our specifications, and we believe that this

 pedal is the absolute best that it can be.

1. INPUT: The signal output from an

instrument (active or passive) may be

connected to this 1/4" Input by means

of an unbalanced, shielded instrument

cable.

NOTE: There is a –15 dB Pad Jumper

located inside of the pedal. Details on

switching the jumper may be found on

page 5.

NOTE: Unplug the input cable when not

in use, as the 9V battery will drain (and

eventually die). Details on replacing the

battery may be found on page 5.

2. CLASSIC PREAMP SWITCH:

Engage this switch to activate the

Classic Preamp pedal. This pedal is

true bypass, meaning the signal will

pass through from input to output, with

no circuitry in between, when the switch

is disengaged.

3. ON/OFF LED: This LED illuminates

 when the pedal is engaged.

4. VOLUME: Use this to control the overall

output level. Use it wisely and turn it

down when making connections or

trying something new. Unity is at 12:00.

NOTE: The Volume control is active

only when the pedal is engaged.

5. BASS: Use this to adjust the low

frequency level. This provides up to 7

dB of boost, or 20 dB of cut, at 40 Hz.

The low frequency output is flat at the

center position.

6. ULTRA LO: This switch, when

engaged, enhances the amount of lowend output with a 2 dB boost at 40 Hz,

and –10 dB cut at 500 Hz.

7. MID: Use this to adjust the midrange

frequency level. This provides up to 5

dB of boost, or 11 dB of cut, at 500 Hz.

The midrange frequency output is flat at

the center position.

Rotate the control counter-clockwise

for a “contoured” sound, (more distant,

less midrange output) or clockwise for a

sound that really cuts through.

8. TREBLE: Use this to adjust the high

frequency level. This provides up to 10

dB of boost, or 10 dB of cut, at 4 kHz.

The high frequency output is flat at the

center position.

9. ULTRA HI: This switch, when engaged,

enhances the amount of high-end

output by 7 dB at 8 kHz.

10. OUTPUT: Typically, this 1/4" Output

jack connects to the input of an

external power amplifier – or powered

loudspeakers, as long as they have their

own input controls to adjust the volume

level – by means of an unbalanced,

shielded, instrument cable.

However, it may alternatively be

connected to an external mixer,

recorder, or interface. In this way, you

do not have to mic the speaker cabinet

in order to add it to the main mix or

to record. The level of the signal is

affected by the Volume control when

pedal is engaged.

Technical Specifications

 Signal to Noise Ratio 75 dB 

(50 Hz @ 300mV RMS)

 Maximum Gain +18 dB 

Tone Controls 

 Bass: +7/–20 dB @ 40 Hz 

Mid: +5/–11 dB @ 500 Hz 

Treble: +10/–10 dB @ 4 kHz 

Ultra Hi: +7 dB @ 8 kHz 

Ultra Lo: +2 dB @ 40 Hz / –10 dB @ 500 Hz

Impedances 

Input: 1 M @ Normal, 83 k w/–15 dB Pad 

Output: 120 

Power Requirements 

External: 9VDC, ≥20 mA, center negative

 Size (H x W x D) 

2.2 in x 2.6 in x 4.5 in 

56 mm x 66 mm x 114 mm

 Weight :0.6 lb / 0.3 kg (approximately