The Markbass MB MINI BOOST is an analog bass booster pedal, built as a smaller take on Markbass's MB7 Booster. It gives a clean level lift of up to +20 dB and adds a Variable Preshape Filter that boosts lows and highs while cutting mids, the kind of tone shaping bass players often want before an amp or preamp1. It belongs to the broader family of boost pedals and bass pedals.
What it does
The pedal has one main control, the Boost Gain Level, which runs from 0 dB to +20 dB1. At low settings it works as a clean volume lift; pushed higher, it adds serious level to drive the front end of an amp. Alongside the level control sits the Variable Preshape Filter. RockBoard's PedalPedia describes it as boosting lows and highs and cutting mids2, a fixed-direction tone shaping control rather than a parametric EQ.
How it differs from the MB7 Booster
The Markbass MB Mini Boost is a compact booster pedal2. Its published weight is .51 lbs1.
| MB Mini Boost | MB7 Booster | |
|---|---|---|
| Boost | 0 dB to +20 dB1 | Up to +20 dB1 |
| EQ | Variable Preshape Filter2 | 7-band graphic EQ, 40 Hz to 4 kHz, +/-16 dB per band1 |
| Chassis | Much smaller1 | Larger |
| Power | 9V DC, center negative2 | +9/+12VDC or 9V battery1 |
Size, power and practical notes
Markbass positions the MB Mini series as pedals "made to the same high quality level as our standard effect line" but in an ultra-compact, lightweight chassis, saying "these incredible-sounding pedals will fit onto even the most crowded pedal boards"2. No Treble listed the dimensions as 3.23" x 1.5" x 4.92" and the weight as .51 lbs1.
The maker's product page lists the power as 9V DC, center negative2, while another maker listing describes a 9 to 12V requirement usable with any standard power supply1. The two listings disagree on the exact range. Unlike the MB7 Booster, which can run on a 9V battery1, no battery option is given for the Mini Boost.
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Questions
How much boost does the Markbass MB Mini Boost give?
The Boost Gain Level control runs from 0 dB to +20 dB, so the pedal can act as a clean level lift for solos or as a substantial gain stage pushing an amp or preamp. On top of the level boost, the Variable Preshape Filter boosts lows and highs while cutting mids, shaping the tone in the direction bass players usually want from a preshape control.
What power does the Markbass MB Mini Boost use?
The maker's product page lists 9V DC, center negative power. A separate maker listing describes a 9 to 12V power requirement usable with any standard power supply, so the two listings disagree on the exact range. There is no mention of battery power for this model, unlike the larger MB7 Booster.
Is the Markbass MB Mini Boost analog?
Yes. The maker's product page lists the circuit type as analog, which is typical for a straightforward booster: the signal is not converted to digital at any point in the pedal.
How big is the Markbass MB Mini Boost?
No Treble reported the dimensions as 3.23 x 1.5 x 4.92 inches and the weight as 0.51 lbs. That is a much smaller chassis than the MB7 Booster it is based on, and Markbass says the MB Mini series pedals are made to fit onto even the most crowded pedal boards.
Sources (2)
- Markbass Introduces Four New Pedals at NAMM 2012, No Treble, 2012-02-13
- MB MINI BOOST by Markbass, RockBoard PedalPedia, 2026