MicroBass 3
MicroBass 3
EBS MicroBass 3. Pro-level tone, wherever you play.
The MicroBass 3 is a premium 2-channel analog preamp that lets you take control of your sound—no matter the backline. Built on the legendary EBS HD360 and Fafner II amp platforms, it’s engineered in Sweden with top-tier components and designed for maximum reliability.
Versatile by Design:
Clean and Drive channels—run in series or parallel
Dual XLR outputs for simultaneous pre/post EQ or stereo FX return
Works seamlessly with any power amp at pro mixing console level
High 10 MΩ input handles passive, active, or piezo pickups
All-in-One Powerhouse:
Built-in tuner for fast adjustments
Onboard compressor from EBS amp heritage
Stereo FX loop support
Tour-ready build with studio-grade performance
The MicroBass 3 gives you consistent tone and complete control—on stage, in the studio, or anywhere in between.
Features
Preamp
100% analog professional preamp
Channels
Dual channels – Clean and Drive
Channel Configuration
Run in parallel or series
Blend Control
Blend control for the drive
Balanced XLR Output
Dual Balanced XLR-out (pre & post EQ or Stereo)
Effects Loop
Effects loop (mono or stereo)
Filters
Character and Bright filters (clean channel)
Drive Engines
HI or LO gain drive engines
Drive Type
Thin or Deep type (drive channel)
Additional Outputs
Tuner, Aux-input, Headphones out
Input Impedance
10 Mohms input impedance (main input)
Power Supply
9V DC, 450 mA required (power supply included)
Manual
Download the manual (pdf)
Specs
Clean Channel: Input Impedance
Parallel mode 1.5 Mohms, 44 pF; Serial mode 10 Mohms, 22 pF
Gain
Gain Range min/max -∞ / +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, Frequency 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 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 -20 dBv, 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.)
