EBS MicroBass 3 Professional Bass Preamp

The EBS MicroBass 3 is a 2-channel preamp, built exclusively with premium components. It is engineered by EBS in Sweden with technologies from the famous HD360 and Fafner II amplifier designs. The preamp operates at a signal level equal to a professional mixing console (+/- 15V) which gives you plenty of headroom. The high signal level makes it suitable to use as a preamp in combination with any type of power amp.

Run the Clean and Drive channels in series or parallel. Use the dual balanced XLR-outputs to tap the signal post and pre EQ at the same time. If you run the Effects loop in stereo mode, the balanced outputs become a Left and Right output instead. With 10 Mohms input impedance, it handles any type of bass – passive, active or with piezo pickups.

The built-in tuner makes it easy to tune between songs without the need of an external device. The MicroBass 3 also carries an onboard compressor, similar to the one found on several EBS amplifiers, and several more features.

The analog EBS MicroBass 3 ensures your sound – every time.

Features

• 100% analog professional preamp.

• Dual channels – Clean and Drive.

• Run in parallel or series.

• Blend control for the drive.

• Dual Balanced XLR-out (pre & post EQ or Stereo).

• Effects loop (mono or stereo).

• Character and Bright filters (clean channel).

• HI or LO gain drive engines.

• Thin or Deep type (drive channel).

• Tuner, Aux-input, Headphones out.

• 10 Mohms input impedance (main input).

• 9V DC, 450 mA required (power supply included).

Specifications

Clean Channel:     

• Input Impedance  

  • Parallel mode  1.5 Mohms // 44 pF

  • Serial mode  10 Mohms // 22 pF

• Gain:

  • Gain Range min/max -oo/ +30 dB

  • Gain Peak LED +10 dBv

  • Frequency Response  +0 / -3 dB  20 - 20.000 Hz

• CHARACTER:

  • Filter Type  Shelving High/Low Pass

  • Gain:  Lo  +6 dB @ 80 Hz
    Mid  -2 dB @ 900 Hz
    Hi  +3 dB @ 7.5 kHz

• BRIGHT:

  • Filter Type  Shelving.  Gain:  +10 dB @ 10 kHz

• FILTER SECTION: 

  • Bass Filter:  Type   12 dB/oct. Shelving. Gain Range  +/- 18 dB @ 60 Hz

  • Middle Filter: Type  Bandpass Filter. Freq Range  50 - 5.000 Hz. Q - Boost  0.5 - 1.3,  Q - Cut  0.5 - >5.  Gain Range +/- 12-15 dB

• Treble Filter: Type  Shelving. Gain Range +/- 18 dB @ 8 kHz

• COMP/LIMIT: Comp Gain  0 dB

  • Attenuation max  24 dB

  • Compression Ratio max  3:1

  • Attack (80%) typ  <10 ms

  • Release (80%) typ  100 ms

Drive Channel:

• INPUT: Input Impedance   1.8 Mohms // 22 pF

• DRIVE: Gain Range  40 dB

• ENGINES:

  • Lo: Type   2nd harmonics soft

  • Hi: Type   Symmetrical 2-stage with +18 dB gain

• TYPE:  Thin/Normal/Deep   Pre Drive EQ

• FILTER SECTION: 

  • Tone Filter:   Type  6 dB/oct.   Low Pass. Frequency Range  700 - 20k Hz

  • Middle Filter:   Type   Bandpass Filter. Frequency Range 100 - 4.500 Hz. Q  1.2,   Gain Range  +/- 15 dB

EFFECTS LOOP:

• Loop Signal Level nominal  -10 dBv

• Gain  Unity (1:1)

• Output Impedance  <100 ohms

• Input Impedance  >200 kohms // 22 pF

PHONES OUT:   

• Recommended Impedance  32 - 200 ohms

AUX INPUT:  

• Input Impedance  20 kohms

• Nominal Level  -10 dBv

OUTPUT: 

• Output Impedance  <1 kohms

• Signal Level  nominal  0 dBv

BALANCED OUTPUTS:

• Output Level  nominal  -20dBv

• XLR Connections  1-GND, 2-Hot, 3-Cold

• Options  Pre/Post EQ, L/R Ch. in stereo mode

AUXILIARY INFO:   

• Power Requirements   Idle  450mA @9V. Max  750mA @9V (with headphones at max output level)

Dimensions (WxDxH):   max  168 x 124 x 53 mm / 6.6” x 4.9” x 2.1”

Weight:  660 g ( 1.5 lbs.)