Blackstar - Unity 250 Bass Combo Amp 1x15 250w
The new face of bass
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.Couldn't load pickup availability
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Any player, any sound
Performance optimised, powerful. Unity’s deceptively simple controls allow you to quickly and easily mould and create your tone no matter the style. Choose from 3 unique voices and response controls to uniquely shape the sound in your head.Ultimate flexibility and connectivity
Push your creativity with built in Chorus, Compression and Octave effects all whilst being the perfect unit for both studio and stage with a balanced XLR, USB connectivity and more.Key Details
- 250 Watts
- Custom designed Eminence 15inch Opus Speaker
- 3 Voices – Classic, Modern, Flat
- 3 Footswitchable Drives with user controllable blend – Overdrive / Distortion / Fuzz
- 3-band EQ with semi-parametric Mid
- Unique Response control – Linear, 6L6 and 6550
- Footswitchable Chorus and Sub-Octave with adjustable level control
- Compressor
- Input Gain with clip indication
- Pad Switch for active / passive instruments
- Master Volume
- Link to Unity Bass Series Active Cabinet
- USB audio out for direct recording
- Series effects loop
- MP3 / Line in
- XLR + ¼inch Line Out / Headphones with independent level control
- D.I. / cabinet emulated line outputs
The sound in your head
Offering Classic, Modern and Flat voicings, Unity bass is perfect for playing any style. Classic offers a Valve-Inspired growl with a Vintage EQ, Modern offers High-headroom dynamics and advanced EQ and Flat provides totally flat signal that's clean and transparent.Unique response control
Unity’s unique response control adapts 3 power amp stages to shape compression and feel. Linear response is powerful and articulate, 6L6 packs the compression and punch of 6L6 power valves and 6550 creates the dynamics and headroom of high power 6550’s.Overdrive options
Adding to Unity's array of features, the amp comes with 3 different overdrives all with a user-controlled blend. Overdrive offers smooth, open and harmonically rich tone. Distortion provides balanced, pedal-like power and Fuzz creates an in-your-face classic bass fuzz.Versatile effects
Enhance your tone even further with Unity’s built in Chorus, Compressor and Octaver effects.Pro connectivity
Perfect for any occasion, studio or stage Unity Bass is perfect for any musical environment with balanced XLR and USB connectivity and more.Extended your set up
The Unity U2250ACT 1×15” Active cab adds 250 Watts of extra stage power to any Unity Combo.
Unity 30 |
Unity 60 |
Unity 120 |
Unity 250 |
Unity 500 |
Unity 250ACT |
|
Power |
30W | 60W | 120W | 250W | 500W | 250W (Active Cabinet) |
Speakers |
1x 8" Blackstar Designed Speaker | 1x 10" Blackstar Designed Speaker | 1x 12" Blackstar Designed Speaker | 1x 15" Eminence Opus Speaker | 2x 10" Eminence Opus Speaker | 1x 15" Eminence Opus Speaker |
Inputs |
Instrument, Footswitch, Line-in | Instrument, Footswitch, Line-in | Instrument, Footswitch, Line-in | Instrument, Footswitch, Line-in, Effects Loop | Instrument, Footswitch, Line-in, Effects Loop | Active XLR Input, Passive Speaker Jack Input |
Outputs |
DI/Line Out (XLR & Jack), Cabinet Link (XLR) | DI/Line Out (XLR & Jack), Cabinet Link (XLR) | DI/Line Out (XLR & Jack), Cabinet Link (XLR) | DI/Line Out (XLR & Jack), Cabinet Link (XLR), USB | DI/Line Out (XLR & Jack), Cabinet Link (XLR), USB | Cabinet Link Thru |
Voices |
Classic, Modern, Flat | Classic, Modern, Flat | Classic, Modern, Flat | Classic, Modern, Flat | Classic, Modern, Flat | N/A (Cabinet) |
EQ |
3-band EQ with semi-parametric Mid | 3-band EQ with semi-parametric Mid | 3-band EQ with semi-parametric Mid | 3-band EQ with semi-parametric Mid | 3-band EQ with semi-parametric Mid | N/A (Cabinet) |
Effects |
Chorus and Sub-Octave with adjustable level control | Chorus and Sub-Octave with adjustable level control | Chorus and Sub-Octave with adjustable level control | Chorus and Sub-Octave with adjustable level control | Chorus and Sub-Octave with adjustable level control | N/A (Cabinet) |
Compressor |
Yes | Yes | Yes | Yes | Yes | N/A (Cabinet) |
PadSwitch |
Yes | Yes | Yes | Yes | Yes | N/A (Cabinet) |
USBRecording |
No | No | No | Yes | Yes | N/A (Cabinet) |
Effects Loop |
No | No | No | Yes | Yes | N/A (Cabinet) |
Line-in |
Yes | Yes | Yes | Yes | Yes | N/A (Cabinet) |
DI / Cabinet Emulated Line-out |
Yes | Yes | Yes | Yes | Yes | N/A (Cabinet) |
Weight |
10kg | 12kg | 15kg | 19.2kg | 22kg | 19.5kg |
Dimensions |
395(W) x 435(H) x 285(D) mm | 410(W) x 465(H) x 295(D) mm | 445(W) x 515(H) x 325(D) mm | 485(W) x 572(H) x 361(D) mm | 485(W) x 612(H) x 361(D) mm | 485(W) x 593(H) x 361(D) mm |
Blackstar
AUTHORIZED DEALERAvailable in store & online — Nantel Musique
Blackstar is one of the most recognized names in musical instruments worldwide. Known for exceptional build quality, innovative design, and reliable performance across every price range, Blackstar instruments are trusted by beginners and touring professionals alike.
at nantel musique, we carry a curated selection of blackstar bass amps — each one inspected, set up, and backed by our expert team. every purchase includes our satisfaction guarantee and dedicated after-sales support.

