Pricing and availability
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Price
Average Price: $614
Standard/Professional
$200
$701+
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Budget
Standard
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Price History
Based on price data from 4 merchants for "Blackstar Unity 250 Bass Combo". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Experience the pinnacle of bass amplification with the Blackstar Unity 250 Bass Combo. This versatile powerhouse is crafted for bassists seeking both tonal excellence and robust performance. At the heart of its design is the unique Response control, allowing you to seamlessly switch between three classic power amp stages—Linear, 6L6, and 6550—each offering distinct qualities in compression, drive, and dynamics. Tailor your sound further with three preamp voicings: Classic, Modern, and Flat, ensuring your tone fits any playing style or musical genre.
The Unity 250 is equipped with a 15" Eminence Opus speaker, delivering 250 watts of pure bass energy. It features a Drive section packed with overdrive, distortion, and fuzz options, each with user-controllable blend, giving you the ability to sculpt your sound with precision. Explore additional sonic textures with built-in effects like compression, chorus, and sub-octave.
For the gigging musician, the Unity 250 is a dream come true. It offers an extensive range of connectivity options, including an XLR + 1/4" line output, USB for direct recording, and a headphone output with independent level control. Whether you're in the studio, on stage, or practicing at home, this amp adapts to your needs seamlessly. Plus, with its link capability to the Unity U250ACT powered cabinet, you can easily expand your rig with an additional 250 watts of power.
Key Features:
- 250-watt, 1 x 15" bass combo with Eminence Opus speaker
- Unique Response control with Linear, 6L6, and 6550 power amp stages
- Three preamp voicings: Classic, Modern, and Flat
- Overdrive, Distortion, and Fuzz with user-controllable blend
- Built-in effects: compression, chorus, and sub-octave
- Extensive connectivity: XLR + 1/4" line output, USB, headphone out
- MP3/line input for practice sessions
- Link capability to Unity U250ACT powered cabinet for additional power
Owner's manual
Blackstar Unity 250 Bass Combo User ManualProduct specs
| Type | Solid State |
| Number of Channels | 1-channel, 3 x voices, 3 x drives |
| Output Power | 250W |
| Speakers | 1 x 15" Custom Eminence Opus speaker |
| Effects | Chorus, Sub-Octave |
| Compression | Yes |
| EQ | 3-band EQ with Mid Frequency |
| Amp Modeling | Linear, 6L6, 6550 power models |
| Inputs | 1 x 1/4", 1 x 1/8" (mp3/line in) |
| Outputs | 1 x 1/4" (line out/headphones), 2 x XLR (DI out, cab) |
| Headphones | Yes |
| Effects Loop | Yes |
| Footswitch I/O | 1 x 1/4" (overdrive, effect) |
| Footswitch Included | Yes, 2-button |
| USB | 1 x Type Mini-B |
| Power Source | Standard IEC AC cable |
| Height | 22.5" |
| Width | 19" |
| Depth | 14.2" |
| Weight | 48.9 lbs. |
FAQs
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What type of speaker does the Blackstar Unity 250 Bass Combo use?
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The Blackstar Unity 250 Bass Combo features a custom 15" Eminence Opus speaker, designed to deliver powerful and clear bass tones suitable for various playing styles and venues.
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Does the Blackstar Unity 250 Bass Combo have built-in effects?
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Yes, this combo amp includes built-in effects such as chorus and sub-octave, allowing you to enhance your bass sound directly from the amplifier without needing additional pedals.
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Can I use headphones with the Blackstar Unity 250 Bass Combo?
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Yes, the Blackstar Unity 250 Bass Combo has a headphone output, allowing you to practice silently without disturbing others.
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What kind of power models does the Blackstar Unity 250 Bass Combo offer?
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The amp features Linear, 6L6, and 6550 power amp modeling options, providing flexibility in shaping the compression, drive, and dynamics of your bass tone.
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Is the Blackstar Unity 250 Bass Combo suitable for live performances?
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With its 250-watt output and DI outputs for direct connection to a PA system, the Blackstar Unity 250 Bass Combo is well-suited for live performances, offering both power and versatility.
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Does the Blackstar Unity 250 Bass Combo include a footswitch?
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Yes, it comes with a 2-button footswitch, enabling easy control over the amp's overdrive and effects during live performances or practice sessions.
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What are the connectivity options for the Blackstar Unity 250 Bass Combo?
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This amp offers a variety of connectivity options, including 1/4" line out/headphones, 2 x XLR DI outputs, and USB connectivity for recording or practice with digital devices.
Videos
Sweetwater
Blackstar Unity Bass Amps Demo
Reviews
PROS
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Exceptional sound quality enhances various bass guitars
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Durable construction outperforms competitors
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Loaded with versatile effects for expansive sound creation
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Offers an impressive range of tones, suitable for any style
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Capable of producing powerful, wall-shaking bass
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Ideal for both novice and professional bassists
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Allows for additional satellite cab for increased power
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Provides unique sounds, outshining traditional Fender and Ampeg amps
CONS
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May experience technical issues like sound cutouts and volume fluctuations
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Headphone output malfunction; sound leaks from main speaker
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Suspected poor wiring quality leads to unpredictable performance
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Significant weight makes transportation challenging
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Blackstar Unity 250 Bass Combo.
Build quality
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The Unity 250 and U500 both weigh about 50 lbs, attributed to the Eminence speakers, despite lacking tube components.
Source
Features and functionality
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The Unity 250 provides a strong base tone that can be shaped effectively with EQ and pedals, although onboard effects and tube simulations are considered underwhelming.
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The U250 can be paired with the U500 through a "Cabinet Link" XLR output for expanded wattage, up to 750 watts with additional U250 units.
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The U250 is meant to be compatible with the U500, potentially allowing for an expandable system through additional U250ACT active cabinets.
Source
User experience
Critic Reviews
5.0 out of 5
Based on 1 Review and 3 Ratings
139
Exellent and versitile amp
Bought this amp for "one amp for many styles" and it is worth every penny. Has voicings for vintage , modern styles, plus distortion, chorus, octaver and compressor.
Genre Usage
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Used With
Based on how musicians on Equipboard use Blackstar Unity 250 Bass Combo, it is most commonly used with the following gear.
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