If you want to beef up your Blackstar Unity Bass Series combo, then you need a Unity U250ACT powered cabinet. You'll experience classic low-end muscle via a custom-designed Eminence Opus speaker, while an independent volume control makes balancing your levels a breeze. This flexible cab's XLR combo input allows you to use it with external preamps, while a passive 1⁄4" input lets it function as a standard extension cabinet. And if you really want to build a monster rig, use the U250ACT's XLR Thru to chain together multiple cabinets. The bassists here at Music Experience appreciate the extra 250 watts of power that the Unity U250ACT adds to their Unity Bass Series combos.

The Blackstar Unity Bass Series — built for tonal flexibility

The Blackstar Unity Bass Series was built for tonal flexibility. The 250- and 500-watt combo amplifiers allow you to switch between three power amp stages via Blackstar's unique Response control to shape your compression, natural drive, and dynamics. All combos let you choose between three distinct preamp voicings, and then sculpt the result with a 3-band EQ. Increase your bass's punch, depth, and low end, with onboard effects. And thanks to the Unity U250ACT powered cabinet, you can achieve impressive output levels onstage. Get one of these eminently versatile amps, and everything from valve grind to high-headroom clean will be within your grasp.

What Blackstar Says...

Unity Pro Bass are the result of countless hours of technical research and benchmarking against the most iconic historic references. Designed from the ground up by bass players, for bass players they are straight forward and powerful. Blackstar’s unique Response control allows the player to choose between the sound and feel of three classic power amp stages, shaping compression, natural drive and dynamics. Combined with three distinct preamp voicings and a 3-band semi-parametric EQ, Unity produces infinitely flexible bass tone and exceptional feel, whatever your playing style.

Extended your set up

The Unity U250ACT 1×15” Active cab adds 250 Watts of extra stage power to any Unity Combo.