Pricing and availability

We compare 600+ stores and found this item at 7 stores. Prices updated .

Sweetwater
4.5 (8)
$649.99
Guitar Center
5.0 (2)
$649.99
Amazon
4.2 (31)
$649.99
Reverb
4.0 (3)
$515.41 New
$499.00 Used
zZounds
5.0 (1)
$649.99

Average Price: $614

Standard/Professional

$200

$701+

Price Tier

Budget

Standard

High-end

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 Manual

Product 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

What type of speaker does the Blackstar Unity 250 Bass Combo use?

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.

Does the Blackstar Unity 250 Bass Combo have built-in effects?

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.

Can I use headphones with the Blackstar Unity 250 Bass Combo?

Yes, the Blackstar Unity 250 Bass Combo has a headphone output, allowing you to practice silently without disturbing others.

What kind of power models does the Blackstar Unity 250 Bass Combo offer?

The amp features Linear, 6L6, and 6550 power amp modeling options, providing flexibility in shaping the compression, drive, and dynamics of your bass tone.

Is the Blackstar Unity 250 Bass Combo suitable for live performances?

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.

Does the Blackstar Unity 250 Bass Combo include a footswitch?

Yes, it comes with a 2-button footswitch, enabling easy control over the amp's overdrive and effects during live performances or practice sessions.

What are the connectivity options for the Blackstar Unity 250 Bass Combo?

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.

Sweetwater

Sweetwater

Blackstar Unity Bass Amps Demo

Video thumbnail for Blackstar Unity Bass Amps Demo by Sweetwater

Blackstar Unity Bass Amps Demo

Sweetwater

Sweetwater

Video thumbnail for All About The Bass - Back In Blackstar - Unity Combo Amp by Andertons Music Co

All About The Bass - Back In Blackstar - Unity Combo Amp

Andertons Music Co

Andertons Music Co

Video thumbnail for Blackstar Unity 250 Bass Amp Review & Sound Test! by MyMusicMasterclass

Blackstar Unity 250 Bass Amp Review & Sound Test!

MyMusicMasterclass

MyMusicMasterclass

Video thumbnail for Blackstar U250 Unity Pro 250W 1x15 Bass Combo | Gear4music demo by Gear4music Guitars

Blackstar U250 Unity Pro 250W 1x15 Bass Combo | Gear4music demo

Gear4music Guitars

Gear4music Guitars

Video thumbnail for Just Sounds: Part 3-Blackstar Unity 250 Bass Amp Modern Channel by Noisegate

Just Sounds: Part 3-Blackstar Unity 250 Bass Amp Modern Channel

Noisegate

Noisegate

Reviews

PROS

  • Exceptional sound quality enhances various bass guitars

  • Durable construction outperforms competitors

  • Loaded with versatile effects for expansive sound creation

  • Offers an impressive range of tones, suitable for any style

  • Capable of producing powerful, wall-shaking bass

  • Ideal for both novice and professional bassists

  • Allows for additional satellite cab for increased power

  • Provides unique sounds, outshining traditional Fender and Ampeg amps

CONS

  • May experience technical issues like sound cutouts and volume fluctuations

  • Headphone output malfunction; sound leaks from main speaker

  • Suspected poor wiring quality leads to unpredictable performance

  • 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

  • The Unity 250 and U500 both weigh about 50 lbs, attributed to the Eminence speakers, despite lacking tube components.

    Source

Features and functionality

  • 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.

    Source
  • 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.

    Source
  • The U250 is meant to be compatible with the U500, potentially allowing for an expandable system through additional U250ACT active cabinets.

    Source

User experience

  • Owners appreciate the Unity 250's capacity to deliver clean tones at moderate to high volumes, thanks to its ample headroom.

    Source
  • Owners have noted confusion over mains voltage compatibility, especially when manuals list 110-120V, but most international models support 220-240V.

    Source

Critic Reviews

Blackstar Unity 250 & 500 Bass Amps Review

guitar.com

While the Blackstar Unity 250 Bass Combo offers a straightforward design and powerful sound, it falls short in portability and some control usability. Its 15-inch Eminence speaker delivers a range of good tones and effects, making it suitable for small gigs. However, the slightly fiddly mini-switches and lack of a mute function on the foot controller can be frustrating. The amp is robust and versatile, but at 19.2 kg, it's not the easiest to transport. Overall, it's a decent choice for bassists seeking solid performance without breaking the bank, but it may not disrupt the bass market as Blackstar hopes.

Blackstar UNITY Pro Bass U500, U250 amps and U250ACT Active cab review | MusicRadar

musicradar.com

With a powerful preamp and impressive versatility, the Blackstar Unity 250 Bass Combo caters to a range of styles, from vintage to modern tones. Its three Voice settings and amp Response options allow for tailored sound, making it suitable for all bass players. However, the speaker struggles at high volumes, causing distortion when pushed too hard. Despite this limitation, the warm, smooth sound from the 15” driver shines through, especially when used with the U250ACT active cab, enhancing low-end richness. Overall, the Unity 250 is a strong contender for those seeking a reliable, adaptable amp at a reasonable price.

positive

5.0 out of 5

Based on 1 Review and 3 Ratings

5 star
4 star
3 star
2 star
1 star
M

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.

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