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Blackstar Unity 250 Bass Pro System 250-Watt 1x15" Bass Combo Amplifier

Give your bass guitar a solid foundation with the Blackstar Unity 250 Bass Pro System 250-Watt 1x15" Bass Combo Amplifier. This amp will give you the versatility, control, and grounded (or ground lifting) sound you need.


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MSRP: Old Price $719.99 Discounted Price $549.99 Save : $170.00 (24%)
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MSRP: Old Price $719.99 Discounted Price $549.99 Save : $170.00 (24%)
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Looking for an easy to use, multipurpose bass amp? An exceptional option straight from Blackstar, the Unity 250 Bass Pro System 250-Watt 1x15" Bass Combo Amplifier will give your music all that and more. With rock-solid bass power and amplification (in partnership with Eminence - the world renown speaker developer), various versatile effects and dynamics, and convenient connectivity features, you'll be sure to get your sound heard the right way. If you're a bass player looking for a combo amp with incredible flexibility, pure Blackstar quality, and exceptional power, the Unity 250 Pro Bass System was made for you.

Rock-Solid Bass Power
This 250-watt Unity Pro combo amplifier contains a reliable, world renowned Eminence 15" Opus speaker. If you want an even stronger sound, plug into the Unity Bass Series U250 Active 1 x 15" Cabinet through the Cabinet Link using an XLR cable for 250 watts of extra backup energy.

Versatile Effects and Dynamics
Choose from 3 Voices (Classic, Modern, and Flat) and alter Low, Mid-Frequency, and High Controls to your liking. Also choose from 3 unique drives including Overdrive (smooth, harmonic-rich), Distortion (balanced distortion), and Fuzz. Use the Response Control to select between Linear, 6L6, and 6550, and use the foot switch to change between Chorus and Sub-Octave. Perfect for a wide range of bass players and genres, this amp provides you with a massive selection of tonal options.

Connectivity Features
Whether you're recording, practicing, or performing, this Unity 250 has all the ins and outs you need for a variety of musical situations. Feel free to record directly into your computer (Mac or PC) using the USB audio output, listen to your music with your headphones via the 1/4" headphone/line out, or use the 1/8" mp3/line input to plug in your MP3 device and play along with your favorite tracks. The series effects loop allows for seamless integration of your outboard bass effects.


  • 250-Watt Bass Guitar Amp with Custom Designed Eminence 15" Opus Speaker
  • 3 Voices (Classic, Modern, Flat) and 3 Footswitchable Drives (Overdrive, Distortion, Fuzz)
  • 3-Band EQ, Compressor, Series Effects Loop, Input Gain with Clip Indication, Master Volume Control, and Unique Response Control - Linear, 6L6, and 6550
  • Footswitchable Chorus and Sub-Octave with Adjustable Level Control and Pad Switch for Active / Passive Instruments
  • Link to Unity Bass Series Active Cabinet, D.I. / Cabinet Emulated Line Outputs
  • USB Audio Out, MP3 / Line In, XLR + 1/4" Line Out / Headphones
  • FS-13 2-Way Footswitch Included

Get your Blackstar Unity 250 Bass Pro System 250-Watt 1x15" Bass Combo Amplifier today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Bass Combo Amplifier
  • Footswitch

blackstar rocks the 15!


currently playing a danelectro longhorn through this 15"er and it absolutely sounds perfect for my studio space. lots of combo settings to run and play with and line out direct to board/computer for recording. variety of tones makes this bass amp my new fave and a perfect height to sit on while playing!



Unity 250 Bass Pro System 250-Watt 1x15" Bass Combo Amplifier

5.0 1


Amp Type Solid State
Channels 1
Watts 250
Speaker Configuration 1 x 15"
Speaker(s) Eminence Opus Speaker
EQ Three-Band
Effects Loop Yes
Inputs 1 x 1/4" Footswitch Input, 1 x MP3 / Line Input, 1 x Return Input
Outputs 1 x USB Input, 1 x 1/4" Headphone Output, 1 x XLR Output, 1 x Send Output
Digital FX Yes
Line Out Yes
Reverb No
Footswitch I/O Type 1 x 1/4"
Footswitch Included Yes
Weight 43 lbs.
Dimensions 19.09 x 22.52 x 14.21 inches (WxHxD)
Series Unity Pro Bass Series
Model U250
Warranty Info:

Warranty on Blackstar is 3 years parts & labor, 90 days on tubes & footswitches, 1 year on speakers.  

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