Get the plugin version of Ampeg’s V-4B bass amp head

Experience the iconic sound of Ampeg's V-4B bass amp head in a plugin format. This digital recreation captures the original's classic warmth and dynamic range, offering the same distinctive "grind" and rich tonal texture. Ideal for studio production and live performance, this plugin brings the sound of the legendary V-4B to your digital audio workstation.

Achieve a richer and more textured sound than the Ampeg SVT

During a time when P.A. systems were often inadequate, Ampeg's 300-watt SVT amp head stood out for its ability to deliver powerful low-end in large arenas. While the 100-watt Ampeg V-4B provided less wattage than its bigger brother, it had a unique appeal. The V-4B's power amp, easier to drive into breakup than the SVT offered a richer, more textured tone. This made it the preferred choice of many renowned bass players familiar with both models.

Use a built-in three-band EQ to create thick tube tones

The V4-B has a simple EQ section that effortlessly delivers thick tube tones from the moment you plug in. Featuring a three-band EQ with switchable mids and ultra-low and high switches, it allows you to quickly dial in a vast range of tones, from boomy and beefy to honky and gritty. With separate gain and master controls, plus a Power Soak option, it offers all the character expected from Ampeg.

Unlock the power of a Brainworx FX rack

Officially endorsed by Ampeg, V-4B is a bass amp sim that accurately emulates the original Ampeg V-4B. It features a built-in Brainworx FX rack with meticulously modeled 4x10 and 8x10 cabinets, a noise gate, filter control, and a horn on/off function for the cabinets. All from 65 recording chains that feature well-engineered combinations of classic microphones and boutique outboard gear, run through a Neve VXS72 console.



  • Ampeg V-4B bass amp head emulation
  • Three-band EQ
  • Ultra-low and Ultra-high controls
  • Brainworx FX Rack that includes a noise gate, Tight and Smooth filters, a Power Soak knob, and a Horn switch
  • Three cabinet options
  • 65 recording chains created in a Neve-equipped studio

Audio Examples

Industry Reviews

  • Audio Militia Studios

    Audio Militia Studios

    The legendary sound of Ampeg, always ready to go no matter where you are.

    The effects rack opens up so many more possibilities that you can’t get with the actual amp.

  • Philipp Wilhelm

    Philipp Wilhelm

    Musician, Bass Player, Producing Student

    The amp has been recorded perfectly without any room or microphone issues. That’s something I could never do in my workspace.

Customer Reviews

  • Ampeg V4B

    by Uteowl
    This is incredible! I have an actual VT-22 (combo version of the V4) guitar amp, which is the brother to the V4B and this plug in sounds incredibly like my live amp. The speaker combinations… Read More
  • Secret Tip!

    by Faydit
    I did not know the V4-B, before I noticed this plugin. But is easily became my favorite Ampeg, as it seems to work equally well as bass amp and as guitar amp (plugin).
    Bass overdrive is… Read More
  • Love it

    by Saturn Voyager
    This thing makes my guitar bass to sound beefy and classic. I love it
  • Perfect vintage tones

    by Laserpanther
    Perfect vintage tones . Great with my 62 Fender p bass & my Hofner. Re-amp is perfect.
  • Like The Real Thing

    by Not A Bass Player
    I'm not a Bass player and don't play one on TV. However I do play bass on my own stuff and when bands bring me tracks with no bass. There's a lot of that ya know...
    I never write reviews...Read More


Supported Plugin Formats
AAX DSP, AAX Native, AU, AAX AudioSuite, VST2, VST3

Supported Operating Systems
macOS 14 down to macOS 11
Windows 11 down to Windows 10

Intel, or Apple Silicon

x64-compatible CPU

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM


With the Installation Manager you can select, download & install all the Plugin Alliance products. Select any and all formats you need for your system! Mac & PC.



Ampeg V-4B - Changelog

Version 1.5.1 (Oct 9, 2023)
- General: fixed CPU spikes on Mac OS

Version 1.5.0 (Aug 15, 2023)
- General: added native Apple Silicon compatibility for AAX
- General: added macOS Ventura support
- General: improved plugin loading time in the DAW
- General: fixed issue causing Logic to crash when closing the plugin UI
- General: improved font drawing behavior

Version 1.4 (Mar 15, 2022)
- General: added native Apple Silicon compatibility for VST3, VST2 and AU
- General: added macOS Monterey support
- General: added Windows 11 and Windows 10 21H1 support
- General: discontinued Windows 7 support
- General: discontinued macOS 10.9 and 10.11 support
- General: fixed metering behavior in block sizes of 2048 samples and higher

Version 1.3 (Mar 22, 2021)
- General: Compatibility with Logic on Apple Silicon devices via the Rosetta-2 layer
- General: Fixed possible artefacts when freezing or bouncing tracks in Pro Tools
- General: Fixed automation highlighting disappearing in Studio One
- General: Improved license dialog visibility in dark mode

Version 1.2 (May 27, 2020)
- General: Qualified for use with the Windows 10 May 2020 Update
- General: VST3: Fixed potential hangs in a DAW upon loading
- General: Fixed logical issues in undo / redo behavior
- General: Fixed UI resizing issues in Ableton Live on Windows
- General: Fixed audio processing initialization issues on amp and delay products

Version 1.1 (Nov 06, 2019)
- General: Qualified for use with macOS 10.15 Catalina
- General: Qualified for use with Windows 10 November 2019 Update
- General: Fixed plugin validation in Logic under macOS Catalina
- General: Fixed preset name restore in Logic when reopening a session
- General: Fixed opening authorization dialog triggering automation
- General: Improved instantiation times for plugins
- General: Improved license functionality and branding for subscription
- General: Removed 32-bit support on macOS and Windows

Version 1.0 (July 8, 2019)