Positive Grid BIAS Mini Bass

What it is

A tiny, modern bass amp head that behaves like a full‑sized, flexible rig. The BIAS Mini Bass brings digital amp modelling, real‑world practice tools, and a compact footprint, so you can run serious tone from a tiny box—perfect for pedalboards, small rigs, or any setup where space and weight matter but versatility can’t be sacrificed. Clean, controlled output, a straightforward front‑panel layout, and the ability to tweak or load tones make it ideal for players who bounce between styles or venues.

Why it’s useful

• Wide tonal reach without carrying massive gear. With modern modelling and editing, you’re not stuck to one character; you can shape classic warmth, modern punch, or anything in between.

• Practical live features. It’s designed for real gigs and road use, not just home practice—solid metal housing, helpful workflow, and accessible controls. A respected review noted BIAS Mini heads as unusually user‑friendly modelers that guide you through shaping sound, which is a big plus when time is short at rehearsals or soundcheck.

• Pro‑leaning connectivity and control. External control, effects loop use, and deeper customisation have been highlighted by reviewers as strong points: tidy layout, flexible external control options, and the ability to use cabinet profiles on DI without affecting speaker output.

• Real‑world user praise. Long‑form user feedback rated this model very highly for overall sound, features, ease of use, quality, and value, citing strong performance for recording, session work, and gigging.

Tradeoffs to know

• As with any powerful modeller, there’s a learning curve if you dive deep into tweaking and custom presets. That freedom is a strength, but it can take time before you’re perfectly dialled in.

• Output is plenty for many situations, yet the tiny chassis invites users to consider cab choice carefully for very large venues or supersized low‑end needs.

Spec sheet

Power

• 300 W into 4 Ω

• 150 W into 8 Ω

Amplifier design

• Solid‑state, digital modelling architecture, optimised for bass

• High‑headroom, clean output

Controls

• Gain

• Master volume

• 3‑band EQ

• Preset selection and tone navigation

Connectivity

• Instrument input

• Balanced DI output for PA/recording

• USB for editing, firmware, and deeper control

• Headphone output for silent practice

Speaker outputs

• Single Speakon or combo speaker output

Form factor

• Ultra‑compact, pedalboard‑friendly head

• Lightweight, durable chassis